Mancini HD rear leaf springs

This is normal for these XHD springs, just ask Mancini. These springs are similar to the Mopar SS springs, the passenger side spring is intentionally made stiffer to keep the car level on launch because when the car launches it shifts weight to the right rear. You can raise the drivers side torsion bar ride height and it will help to lower the passenger side rear and level the rear of the car.