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91 GMC Crossmember
So I put a 454 with a TH350 trans in a 91 GMC. The headers and the crossmember are almost in line with each other and not looking like a 3 inch exhaust will work. I found a universal crossmember from Summit pretty reasonably priced but it says it's a 3 or 6 inch drop or flat. I have no idea how much of a drop if any is needed. Or how wide it needs to be. Any advise would be most greatly appreciated.
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