Is there any chance you have any better pics of the exhaust flanges? It's hard to see but looks like the center ports were sealed up well but #2 and #8 not so much.
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'71 GTO, 406 CID, 60916, 1.65 HS, '69 #46 Heads 230CFM, 800CFM Q-jet, TH400, 12 Bolt 3.55
'72 Lemans, Lucerne Blue, WU2, T41, L78, M22, G80
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