Big block trans on a small block

With some hammer work on the floor pan a 727 will fit into an early A-body. A big block 727 is the same physical size of a small block 727 but as the other guys said it won't bolt up without an adapter which I'm not sure anybody even makes. Even if they did it'd cost you as much or more than re-building a 904, which is the only sensible thing to do because with just a basic shift kit their plenty tough to take on almost any 340 in a light weight early a-body. Plus they don't consume as much power to operated as a 727 does (i.e. about 25 free horsepower).