The Saginaw case has the same bellhousing bolt pattern as the SM-420 and other late model transmissions such as the 55-up passenger car and truck 3-speed boxes. I'm pretty sure it won't bolt up to your bellhousing without some adapting.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!