but my guess is that it will fit but the governor that controls what rpm it shifts at will be off. had this experience in using a 123 diesel tranny on a 123 280e. tranny works fine, shifts at low rpm for a gasser because of the low red line on the diesel car it came off. you would be closer in your swap but i bet the v8 tranny will shift about 750 to 1000 rpm lower. check your red lines for the engines.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.