ARH's Long System for the 1997-2004 C5 Corvette starts with 1-3/4", 1-7/8" or 2" long tubes, leading to a 3" X-Pipe assembly that ends and connects to your existing exhaust at the rear axle. ALL American Racing Headers Exhaust Systems are for OFF-ROAD use only. 100% Made in the USA - Never Outsourced Made entirely of 304 stainless steel 3/8" thick laser-cut flanges for a warp-free seal Hand-ported TIG welded inlets Optimized primary tube routing for superior fit and performance Merge collectors with scavenger spikes Catted systems feature 200 cell metallic substrate catalytic converters for extreme durability Part Number w/o CATS C5-97134300LSNC, C5-01134300LSNC, C5-04134300LSNC, C5-97178300LSNC, C5-01178300LSNC, C5-04178300LSNC, C5-97200300LSNC, C5-01200300LSNC, C5-04200300LSNC Part Number w/ CATS C5-97134300LSWC, C5-01134300LSWC, C5-04134300LSWC, C5-97178300LSWC, C5-01178300LSWC, C5-04178300LSWC, C5-97200300LSWC, C5-01200300LSWC, C5-04200300LSWC Part Type Longtube Headers Brand American Racing Headers (ARH) Vehicle 1997-2004 C5 Corvette Material Stainless Steel *Item ships directly from vendor.