Billy Boat Performance Exhaust has once again taken the Pole Position in the market by developing long tube header systems specifically for the C5 and C6 Corvette. The header design incorporates the correct firing sequence which pairs exhaust ports together for more efficient exhaust scavenging. Dyno testing, utilizing technology previously found in racing applications has shown an increase of horsepower and torque throughout the entire RPM range. This is a true bolt-on header, complete with hardware and gaskets, dedicated to the C5 and now for the C6 Corvette as well. The new 1.75" tube flows seamlessly to a 3", 4-into-1 collector.