What are the most likely Donor vehicles for the A 500 4 speed automatic?

Knowing that the more robust girth of the transmission and lack of the proper mount don't allow for the use of a factory floor shifter, I probably would skip these transmissions for a car with a floor shifter. If someone makes a cable operated conversion that allows the use of a factory shifter and not some fancy-bling type B & M shifter, that would be great.
Floor shifter just needs a little fabricating to work.. Girth? They fit in an E body or a 71-72 B body without cutting the body... I doubt that's true on an A body but it's not that big of a deal... I wouldn't want to cut on a real 340 car but 318 or slant 6... Let the fun begin....