Free 440!!!!

All motor home transmissions I've seen are totally different than cars. They are actually shorter and have the parking brake drum mounted to the end and instead of a slip yoke they have a yoke like the rearend to bolt the driveshaft too. It's probably a real heavy duty trans internally but to convert it over for use in a car would require a total strip down to replace the output shaft and related pieces with a car unit.

I don't know positively about the exhaust manifolds but knowing how little room is in the A-body I doubt they'll work but that's just my guess.