I was looking at a bunch of different turbo manifolds. I really like the full-race manifold, but I don't like the price tag. I know how to weld good. I have a small ass mendrel bender, and pipe cutter. Could I make my own manifold. Or do the bends need to be 100% presice and flawless? I know I have the ability to weld with no leaks. I just would love to save a couple hundred dollars.