Supplier Title: MaxTrac 88-98 GM C1500/2500 2WD 5/6 Lug (Non 454 SS) 5in Rear Lowering Flip Kit. - 88-98 GM C1500/2500 2WD 5/6 Lug (Non 454 SS) 5in Rear Lowering Flip Kit. Lowering Flip Kit For GMC C1500/C2500 1988-1998 Rear | 5in | 5/6 Lug | Non-454 SS | 2WD.