OK got an idea I want to run past the group. Back story: Got a big block with pro topline heads. Got rectangle ports, nobody makes headers with rectangle ports for a big block for our trucks. I have a set of camaro headers but they don't fit. Any reason why I couldn't order a set of normal headers, cut the flange off the headers I have and weld them on to the normal headers? I'd have to be mindful of the primary tube diameter and make sure they match up where I cut them. thoughts?