Traction is the big issue out there, We only ran 1 inch of suspension travel because we needed to be on a suspended car. To make the car hook, we were actually stiffening the left front and right rear to combat the unloading of the right rear tire. We also didnt run a posi/spool because "its not if, its when you spin a roadster"
another way we dealt with traction was to ballast the car heavy. some guys even have weight bars in areas of the car to ballast one side or the other. Its not uncommon to see "hot rod" type race cars weigh in well over 3000 pounds
BTW. car looks AWESOME