JEGS Performance Products 30055 Painted Long Tube Headers Painted Long Tube Headers 1-1/2" Primary 3" Collector Fits:(All w/265-400c.i.) 66-72 1/2 & 3/4Ton 73-87 All 88-91 1-Ton Crew Cab(Only)2/4WD Chevy/GMC Pickup 73-91 Suburban 2/4WD 67-89 Blazer/Jimmy 2WD 69-91 Blazer/Jimmy 4WD