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The Superlift 5-inch block kit for 1973–1991 Chevy K30 4WD applications (except dually) supplies a 5-inch rear lift using cast iron blocks sized for single‑wheel K30 trucks. The package includes two cast iron blocks, four U-bolts and all nuts and washers needed for installation, and the kit is backed by a limited lifetime warranty.
Superlift 73-91 Chevy K30 4WD (Will NOT Fit Dually) 5in Block Kit
