The casting or ID tag should say either 248 ('99-'04) or 256 ('05+).Extensive trimming of the factory differential casting will be necessary (see instructions).
If you have adjustable long arms with flexible style joints (heims, Johnny Joints, etc) on both sides, modifications may not be necessaryUpper Control Arm (UCA) brackets are 3 inches higher than factory so adjustable arms may be necessary.Swaybar bracket hole location is approximately 2. Brackets are jigged into truss and set exact position automatically;All other brackets just need to line up to truss, no guessing and measuring involved;Easily upgrade-able for future link geometry changes;Just trim off factory location upper control mounts and weld on a new centered link mount;Truss is reinforced using interlocked 1/4 thick gussets for maximum strength and easy assembly;Overall low profile design means your axle is stronger, sleeker, easier to fit into any vehicle, and less likely to interfere with vehicle components;This kit requires general welding and fabrication skills;California Residents: WARNING Note the following location differences from stock:Lower Control Arm (LCA) brackets are wider than factory location (41.