The trany will bolt right up to the 240. the flywheel will be on the light side though. Come to think of it if you keep the 280 flywheel I have a low mileage clutch disc and pressure plate for the 280 that i will let go reasonably.

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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.