How to seal help

Measure the thickness of the flanges on the exhaust and the intake. They need to be within .050" of each other. You will also need to support the exhaust in the middle to keep it from sagging (maybe a strap across the outlet flanges) and start the 2 end exhaust studs and the center intake stud first. The 3 cupped washers go on with the high side down and the triangular washers go on with the high side out. You also need to start in the middle and work your way to the ends working from top to bottom studs as you go. Hope this helps.