Have you fellows not heard of the 1954 Corvette? It is probably now nearlly impossible to find one though, the exaust maniflod is FACTORY SPLIT and has a heat riser built in as part of the manifold.I do have one I'm using on a 59 261 and it works great, used the stock 59 mufflers and the sound was great, without being overly loud, to get into trouble with the local po-lice. grin and it fits up just like the single exhaust manifold, intake and all. I suppose that if you can find one that the price will be HIGH :mad: