273 -318 swap information needed

Get the 318, swap out the forged crank of the 273 and put the rest of the 273 stuff onto the 318 block. The crank will need to be balanced to the 60g heavier 318 pistons. They were all internally balanced. But life is simpler with the T-Flite Patty bushing...Just slip it into the larger crank bore and the old convertor will register true again
@Charrlie_S sold them at one time.