We are finishing up the off-frame resto on my 64 GTO Tripower Convertible, and after a lot of research we came up with the following exhaust system components, many of which were purchased from the forums host Performance Years. It is not a stock system, but it should last forever and should sound good: 2.5" stainless downpipes, Pypes SGA30 kit (2.5" stainless downpipe extensions and 2.5" tail pipes), stainless 2.5" exhaust splitters, and of course all associated flanges, clamps and hangers. We picked the Dynomax 2.5" Ultraflow long case mufflers in stainless. You can save a couple of hundred by getting the Ultraflows in welded steel. I like the deep tone of the straight thru mufflers as opposed to the chambered mufflers. The CD Silent Power, available through PY, can help you choose a muffler sound that you like. The whole package was espensive, but after going thru the off frame restoration, you kind of get numb to it. We ordered the mufflers from JEGS. It has not been bolted on yet, but we are looking forward to firing it up. Hope this helps. Walt.
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64 GTO Tri-Power Convertible, 4-spd
2nd owner, since December 1965
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