I have a olds 455 in a 82 Cutlass Supreme! I currently have olds 350 rocket exhaust manifolds on it.. yes I know this isn’t a good idea lol! I would like to find some headers that will fit without spending and arm and a damn leg for the ones that fit inside the frame. Is there any other option or set of headers that I can use EVEN if I have to beat the hell out of them?