Hellow Don just thought i would let you know although i live in Austraila i have found no one on the net who dose headers for a 322. I hade someone make mine by had using stainless .I could post a pic if it would help you as they are out of my 55 at the moment.the guy put at left hand manifold in a vise using it as a dummy engine then started building right hand header from there cost my about $700 aussy i can tell you that after they went on motor reved out cleanly Befor it like it hit a wall and it would no rev any more nor did i push it either I dont push cars its just nice when you know everything is working the way it should. Kind regards Patrick Maiden bca/au 991