I am trying to acquire a matching set of exhaust manifolds that come stock on the 496HO engine. I have one set of aluminum and one set of cast iron now. I just need two matching sets. If you have a set for sale let me know. If you have a set of cast iron and want to change out for aluminum gimmie some $ and it's a deal. If you have aluminum and want cast, I'll give you some $. Just need two sets that match and I am half way to either.