Limited slips are ok, so you could do the rear locker/front limited slip. Do you have to reset the gears for either of those? I know in jeeps the Aussie is a bolt in driveway job.

My main concerns now are the engine and transmission. The races are between 30 and 50 miles and last around 2 hours. Highspeed, rocks, some mud, and everything in-between. 3 classes- A is stock modified and is where the Vehi would run. Each class has a harder track (A, B, C)