I really wouldn't recommend getting springs on an XI because of the reason the above poster stated. The springs will eventually break. Unfortunately with XI models, the only way to play is to pay $$$. But you get what you pay for.
AWE Non-Res Exhaust | AWE ColdFront | Bootmod3 BEF | Dodson Superstock Clutch | EoS Intercooler | ER Downpipes | ER Chargepipes | Fuel-It Platinum PI | Ice Tank | JB4 | Pure Stage 2 | Swift Springs | TPG/DSS 1200hp Axles | Built Motor (Pauter Rods, Wiseco Pistons, Port & Polish)