The back of a lifted GM 1/2 and 3/4 Ton has to catch up with the front. These Superlift block kits for the Chevrolet/GMC 1/2 and 3/4 Ton Pickup 1969-1972 raise the rear springs in 1.5in, 2.5in, 3in, and 4in steps.
MPN 3516 (1.5in)
MPN 3597 (2.5in)
MPN 3538 (3in)
MPN 3549 (4in)
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