C4 Corvette 1992-1996 Long SystemFor C4 Corvette owners, American Racing Headers has finally answered the call. Your long awaited C4 systems are here! With features you'd expect from ARH including all 100% US made 304 S S construction, 3 8" thick flanges with hand ported inlets, merge collectors with scavenger spikes, your choice of 1 3 4" or stepped 1 3 4" X 1 7 8" primaries and our 3" X Pipe equipped exhaust (with or without our 200 cell metallic substrate cats), it simply doesn't