I'm building a 302 to go in my 1965 mustang and I want to put a set of gt40 heads on it. I read that the gt40s have some issues with long tubes which is something else I'd like to have. I also read that the gt40ps work better with long tubes vs shorty headers. Can any one clear this up for me? I'd like to have the gt40 plus long tube header combo if I can.