New in open box. No returns so make sure this is what you need. Features: Universal rear exit shorty headers for GM LS1, LS2, LS3, LS6, LSX engines 1-5/8” mandrel bent primary tubes and 2-1/2” collectors 3/8” thick header flanges for a leak-free seal Premium gaskets and collector hardware included 2-1/2” reducers with oxygen sensor bungs included
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