Long Tube Headers for Corvette C5 (1997-2004) 5.7L EngineHigh Flow Exhaust Scavenging for the LS1: C5 Corvette Long Tube Headers Who Its For: Engineered for 1997 2004 Chevrolet Corvette owners running the iconic LS1 powerplant who are tired of the stock exhaust choking their high end performance. The Symptom: The factory exhaust manifolds on the LS1 are designed for mass production and engine bay silence, not raw efficiency. These restrictive, cast iron or heavy stamped units create massive backpressure by