Hi Rick, glad your enjoying it. The primer is over POR15, so its just rattle can right now, but the POR15 is not gonna let moisture thru. Its been on 3 years, havent lost an area yet. The headers are 1 3/4"Cragers. We had to cut the manifold flanges and push the tubes through farther to get frame clearance. and ya plenty of torque! If you look at my big pic book on the webpage, its shows the undercoatings going on.