2007-14 Shelby GT500 1 7/8" headers with lead pipes. Tig welded 304 s/s headers with 3/8" thick flanges and smooth flow collectors. Oval exhaust ports that are an exact match to the factory cylinder head. 3" OD slip joint collectors with merge spikes. Includes 3" dia. offroad lead pipes and H-pipe. Full 3" Performance Connect Headers fit to Stainless Works exhaust.