Another great release from Treadstone is our 97-03 Ford F150 5.4l Twin Turbo Manifolds, the only twin turbo manifolds on the market available for the F150! Features T3 turbine inlets, and external wastegate outlets that fit a variety of 35/38mm external wastegates. Limited quantities in stock at all times! All of our turbo manifolds are cast using the highest grade ductile iron, and are coated with a high temperature paint to prevent rusting. Lifetime warranty!