well i need to check into what whitetrash said that the ax15 is the same as the r150f, and if that is the case, you may be able to take your 5 spd tot tranny, use a jeep 4.0 bellhousing, and swap in the 4.0.....just need to do some research...b/c if that was the case, it would definitely be an awesome swap, while keeping the toy tranny, tcase, and axles