When changing traney oil in my IIA it came out gray and chunky with steel pieces. All gears are still working, but I parked it and started planning a transmission rebuild. Found a Series III transmission. Can anyone tell me if that would bolt to my IIA? I don't know what motor it was attached to before. My IIA has a 2.25 Petrol. If motors were different, couldn't the bell housings be switched. Also, want to know if the interior parts are interchangeable. And how do you tell what gear ratio the transfer case has?