Firstly, I only produce cars for the 650pp Suzuka race myself so if anyone is interested in joining me to provide tunes for other races and PPs please PM me and I will get back to you. Also keep in mind that the cars can and will produce much faster lap times than I have posted - I am actually dead last in the GTP_OLR Registry
These tunes are tested with the Sixaxis pad, so I'm not sure how well they will work with a wheel.
The list so far:
Art Morrison '60 Corvette - 2'15.816
Nissan R34 Skyline GTR - 2'12.339
Mitsubishi Evo X - 2'13.017
Aston Martin DB9 - 2'14.569
Note: use extra care when going round a second gear corner when TCS is off, the car tends to start a drift with too much throttle - apply about half pressure and you will be fine.