Quality parts you can trust made by skilled American workers, right here - in the USA. Stainless Diesel Exhaust Manifolds are the best on the market, with zero failures in the 12+ years of being run on daily drivers, race trucks, pullers & semi trucks.
One of the inherent weaknesses of the factory LB7 VCO nozzle was its prone to premature leakage causing the common white smoke problems at idle. The SAC nozzles are much more robust and not prone to this type of failure. Good for hp goals up to +/- 1000hp