QSA 4" Lift Lifting Spindles + 3" blocks + U-Bolts. 4" / 3" Lift. Compatible with:1988-1998 Chevy/GMC C15 C1500 C2500 2WD 5 or 6 Lug ONLY! (Does NOT fit 88-91 w/Standad Cab) READ DESCRIPTION FIRST (SEE BELOW)-- CONTAINS IMPORTANT INFORMATION ABOUT THE APPLICATIONS! Includes 1 set of 4" Lift Spindles (L+R), 3" Rear Lift Blocks, AND U-Bolts Allows for leveling (lifting) the Front of Your Vehicle Between 4" in the front and 3" in the rear. Heavy Duty Spindles allow for Direct Bolt on. Blocks are tapered to correct for pinion angle