Created for large, high horsepower engines, the Hi-Torque Gen-3 is an excellent choice for 600-1400 HP monster motors. On many engines, they equal or exceed header performance. On supercharged engines, they are probably the best solution. Our raceboat, the “Extreme Stainless Marine Special” won 13 national races in a row, on its way to the 2000 World & National title
STAINLESS MARINE BBC Gen. III Exhaust Manifold with Aluminum Riser and 5 Inch Stainless Tailpipes Built to Fit
Stainless Marine Exhaust Manifolds 