It's a high performance setup for drag racing and street hot rodding. The rear end torques over counterclockwise while the engine torques over clockwise. The biased leaf spring setup helps counteract that and helps keep the car flat on the launch. The factory did this too on their hi-po models.C. Did you count the number of leafs in your springs, I found out today my pass side spring had seven leafs whereas my drivers side had only 6. What`s up with that/