Bort62, I believe most muffler shops would probably have the flange you need in stock. I had a new flange, tailpipe, and muffler, installed just a couple of months ago at a very small muffler shop close to where I live, and he had all the necessary hardware for the donut-type gasket manifold. The only thing that he suggested that I go buy, was a small little metal bracket that bolts on from the engine block (where the oil pan and block join) and is welded & secured to the tailpipe for support. My 200cid engine did not have this support! Good Luck! Jim