H x 1.480 in. Fits w/ Most Engine Swap Kits. Professional Installation is Highly Recommended (No Instruction Included). 1 x Header exhaust Kit. All necessary hardware, bolts, and gaskets included. For Small Block Chevy Blazer S10 S15 283 302 350 V8 Black SS Engine Swap Headers. For use w/ Chevy 283, 302, 305, 307, 327, 350, 400 V8 Engines. Clearanced for S10/S15 Applicationsfor S10/S15 Applications. Does NOT Fit Angle-Plug Heads. Fits TH350 Auto Transmissions w/ Floor Shift ONLY. OE Spec or Performance/Custom. Primary Tube Diameter in. The orders of Friday would be shiped in the next Monday. Our office hours are 8:00 a. M to 5:00 p. M (GMT +8) of Monday to Friday. And our Office is closed on weekends and public holidays. We apologize for the late reply during the holidays. 3.0”/ 76MM Stainless Steel DIY Custom Mandrel Exhaust Pipe Straight Bend Kits. 2.25”/ 57MM Stainless Steel DIY Custom Mandrel Exhaust Pipe Straight Bend Kits. 2.5”/ 63MM Stainless Steel DIY Custom Mandrel Exhaust Pipe Straight Bend Kits. 2/51MM Stainless Steel DIY Custom Mandrel Exhaust Pipe Straight & Bend Kit 8PCS. Stainless Steel Headers Exhaust Fits 68-72 BBC Chevy 396 427 Chevelle Camaro. Long Headers Exhaust For Chrysler 300C Dodge Charger Magnum Challenger 5.7L 6.1L. Stainless Fat Fender Well Exhaust Header Kits For Chevy Small Block V8 265-400.