i think hooker or hedman actually make swap headers taht end in a similar spot to the small block full lengths. you would have to fab up a y-pipe, i have seen up to 3.5inch tubing used in crossovers, and 4inch cat/y-collector back tubing fits pretty good underneath a 3rd gen.
i forget who makes the swap mounts, i know it is one of the bigger companies, maybe td products/transdapt? i am sure they are listed in summit or jegs.
later
tim
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