Here is the reproduction exhaust manifold and the tubular headers (for the driver-side) from Corvette Central manufactured by McJack's Corvettes. Corvette Central was also our source for the manifold gaskets, studs, bolts, and other hardware for this article. The 2-inch primary tube, 16-gauge headers are handmade and welded at McJack's. A big plus with these headers is that the steering box, A-arms, frame rails, idler arm, and A/C boxes all clear them and-very important since the project car is a four-speed-the clutch jack-shaft clears them, too. The headers have 21/2-inch collectors, exactly the same as the stock cast iron manifolds.