i've got a '35 with a '49 8BA, had some minor mods to the engine peripherals. I wanted the crab style dist front of engine to match the original look of the 59AB. Oil pan is from a '49 pickup. Slid in place a little tight getting past the front cross member. Mine had a modified Merc crank from builder. Not that hard installing Just go slow and deliberate. Two man job to be safe.
Great engine, you'll love it. Good luck and enjoy the experience! I did.