So I am building a cheap set of compounds, hx35 over s475 I have the hot pipe holding the two together and on the manifold. Starting the intermediate pipe, going with 3 or 3.5 but I'm wondering for the guys who built their own, what was the radius for the 180 bend? Or does someone know a way to measure what I need? I'm thinking measure from the center of the 35 intake to the center line of the outlet of the 475 (in a parallel line) does that sound right? Just don't wanna order a mandrel 180 that when hooked to the 35 is touching the fender lol thanks!