Try setting the Rebound and Bound Settings to opposite Maximum and Minimum... and then switching that based on front and back... raise the front above the rear for ride height... and add some power to the back wheels...
If the ride height of the front is lower than the rear... the tires will just spin...
it is simple physics really... Moving the fulcrum closer to the front wheels will make it easier to pop wheelies... weight balance to the rear...
Finding the Right car... may be easier than you think... and since engine swaps will usually add weight to the front, OI recommend upgrading the stock engine... and if changing the drivetrain makes the car heavier when making it rear wheel drive... do that also.
Last chance... Raise the front all the way up, and bring the back all the way down... Moving the lever upwards will help the Lever move in the desired direction...
Wheelies will be helpful with drag racing... since it is much harder to spin your wheels if they are the bearer of the weight...
Now the wait for Forza gets worse... 4 days left.