Work is underway to upgrade GPL Rank to allow 1955 and 1965 laps, do not worry.  
 
Most likely, the 1955 Rank will be made up of these tracks:
 
- Buenos Aires (under construction)
- Monaco
- Spa
- Zandvoort  
- Aintree  
- Monza with banking (under construction)
 
1965 Rank:
 
- East London
- Monaco
- Spa
- Clermont-Ferrand (under construction)
- Silverstone
- Zandvoort
- Nurburgring  
- Monza
- Watkins Glen
- Mexico

GPL Physics Editing FAQ  
1. Which are the main objectives of the Team ?  
1.a.the developement of the next version of GEM+  
1.b.the developement of the accurate physics, graphics, carsounds and menu screens of the 1965 and 1955 F1 seasons' cars, in the first stage  
1.c.the developement of anticheating measures to avoid incorrect uses of GEM+ features in online racing.
 
2. When will it be released?
There is no deadline as for now  
 
3. Will it work in VROC?  
Yes. All the carsets will work with the nowadays version of VROC.  
 
4. Will the original GPL be affected?
No. People who would like to race with the 1967 F1 cars originally included in GPL will be able to do that, though the 1967 F1 cars will not be allowed to race against the other carsets, and viceversa.  
 
5. What, in short, is being changed in the physics ?
The physics of the cars are being completly redesigned, and this includes the engines, the chassis, the tyres, etc..  
 
6. Where can I find screenshots ?
We will post screenshots of the new developements in this thread.  
 
7. Who is in the development team?
When this matter was pointed out at the RSC forum, the Team agreed that each member would decided to make public his name or not. These are the names of the members of the Team that made their names public:  
Paul Thurston  
Richard Cooke  
Paul Moss  
Gene Fryman  
Roland Ehnstrom  
Gary Simpson  
John W King  
Bill Guillaume  
Martin Granberg  
Dan Archey  
Gary Tall  
Mark Beckman  
Gustavo Olivera  
Nils Ruwisch  
Berca  
Mick Brown  
Paul Jackson  
Michiel Pompert  
Sam Dobie  
Tom de Muer  
David Wright  
John Fransson  
Arturo Pereira
 
8. Do you look for additional BETA testers?
Not for the moment  
 
9. Is there any support for this from the original Papy team?
No, this is a private mod by a group of enthusiasts to Papyrus original Grand Prix Legends recognised as one of the best driving simulator games ever released. As it is a private mod, Papyrus of course cannot be held responsible in anyway as to the quality or problems associated with any modified files. We are happy to note that Alison Hine is associated with the mod team and was one of the original Grand Prix Legends beta team.  
 
10. Will all this stuff require a new installation for GPL ?
No. Each carset will be released with its own graphics/physics/carsounds/menuscreens. You use GEM+ 2.0 to choose the carset. GEM+ 2.0 then automatically patches GPL to use the selected carset, and its physic/graphics/carsounds/menuscreens, and then launches GPL.  
 
11. Which cars will be included in each carset ?
The 1965 carset will include the Brabham BT11, BRM P261, Cooper T77, Walker-Brabham BT7, Ferrari 1512, Lotus 33 and Honda RA272. The 1955 carset will include Vanwall, Gordini T16, Connaught Type B, Maserati 250F, Ferrari 555 Super Squalo, Lancia D50, and Mercedes W196.  
 
12. Are there other carsets in the making ?
A 1951 F1 carset and a Sport car carset developement has been started, but all the works on them has been postponed till the 1965 and the 1955 are finished. The 1951 carset, in its beta state, includes Talbot T26C, BRM T15, Maserati 4CLT/48, Alfa Romeo 159, Ferrari 375, Alta B and Gordini T15.  
 
13. What were the 65 cars like ? How do they drive compared to the 67 cars? What are the 65 cars trademark regarding handling ?
The 1965 cars all have 1.5L engines. The 65's are lighter and more nimble than the 67's but with their 1.5 liter engines they had around 150 less HP. Their tires were narrower offering less traction, more drifting and easier recoverable sliding. Going really fast required earlier commitment and cleaner driving. Tire scrub can be (and was) used to scrub speed but could also be an enemy. If done unnecessarily it would hurt acceleration and/or wipe speed compared to the effect on the more powerful 67's. The engines had less torque and the torque and power bands were narrower than their 3 liter descendants requiring more attention to proper gearing and engine RPM use. I will post pictures of all of them in this same thread. When the 1965 carset will be released there will be a new site with lots of technical information about them. That site will be similar to i.e. Legends of 67.
The 1965 season pole position laptimes were:
1 East London Jim Clark Lotus 33 1m27.2s  
2 Monaco Graham Hill BRM P261 1m32.5s  
3 Spa Graham Hill BRM P261 3m45.4s  
4 Clermont Ferrand Jim Clark Lotus 25 3m18.3s  
5 Silverstone Jim Clark Lotus 33 1m30.8s  
6 Zandvoort Graham Hill BRM P261 1m30.7s  
7 Nurburgring Jim Clark Lotus 33 8m22.7s  
8 Monza Jim Clark Lotus 33 1m35.9s  
9 Watkins Glen Graham Hill BRM P261 1m11.25s  
10 Mexico Jim Clark Lotus 33 1m56.17s  
 
When compared with the 1967 F1 laptimes, the pole at the 1967 Monaco GP was 1m27.6s, at Spa 3m28.1s, at Zandvoort 1m24.6s and at Monza 1m28.5s.  
 
14. Why did we use GPL for these developement ?
The research and developement of this mods had begun more than 3 years ago, so there was no chance to use any of the latest engines of the Papyrus Nascar series. Also because it is already based on non-aero assisted open wheel cars, has a healthy following of enthusiasts worldwide and has an incredible wealth of add on tracks and goodies already in place with more coming almost daily.  
 
15. Will GEM+ 2.0 manage the driver.ini files for the different seasons ?
Yes, GEM+ 2 will swap the driver.ini to match the right season.  
 
16. Will the physics modifications be adjustable by the end-user ala Rally Trophy?
No. The physics parameters will be encripted. The user will be able to create/modify the setups as he does in the nowadays GPL.  
 
17. Will GPL Rank detect the laptimes got using the new carsets ?
Yes. The Administrators of GPL Rank are working in this phase of the project. The 1965 / 1955 mods will have their own benchmark laptimes and their own GPL Ranks, as stated by the GPL Rank Administrators.  
 
18. Are you focused on the sound issue aswell ?
The 1965 and 1955 cars will include their own carsounds, that will be be very different from the 1967 F1 carsounds. If you want to hear some samples of the 1965 and 1955 carsounds look here http://grandprixsounds.m4driving.sm/ . There is a even a BRM 1.5L engine sounds ready to be used in GPL ) The sounds are being made by Sam Dobie.  
 
19. Will GPL Replay Analyser detect the replays saved with the new physics ?
Anaylsing the replay with GPLRA will - with an update to GPLRA which is being worked on at the moment - easily reveal the actual physics used by all drivers in a race, just like you can now use GPLRA to detect engine-swaps. Further, if VROC is rewritten, the host will most likely have the option to block certain carsets from being used - just like you can now block F1 cars from entering an F2 race.  
 
20. Will the 67 cars also get a treatment concerning their physics, especially at low speeds ?
No. They will remain the same.