What manual transmissions were behind the magnums and do they fit into my car

Any small block bell housing and A833 trans will bolt right up. The floor humps are available. For a 5 or 6 speed see American Power Train or Silver Sport Transmissions. The trucks with the Magnums had a big heavy 5 speed. Don't know if anybody has put one of those in an A body (is an Australian 72 Charger a B body)?