I want to give this a shot. Are you using factory options or setups from old speed shops back in the day?
Slash, what tires should I use to replicate my car?
So I should use the Mach 1 as its the closest to a fox body?
The chevelle is heavier and has more wheelspin than the mustang or camaro, thats why it lost Slash. I'd like to see how the Tempest would fair with stats of the '69 Judge. Or maybe a mercury cougar with the gran torino SCJ specs. Since those cars should be in the game but arent.
Edit: If you used lightweight upgrade on the yenko chevelle, you could get close to the weight of the yenko nova and do that too. That should run closer to the mustang.
SlashfanIRL as yours sits it stands the GNX stands now chance, you've got it by a got 3-4 seconds. Stock for stock, they run about even, GNX might pull a little