I have a friend that is wanting to upgrade his maxxum 101 to a new fortrex 112. I have a fortrex 80 on my boat and was just wondering if I bought it from him could I just swap the main unit into my fortrex mount. I have done a little research and couldn't find anything about it. Seems like if the shafts are the same diameter I could just swap the pedal, cables, head, shaft, and motor into my fortrex mount, add a third battery for 36v and I would have a fortrex 101. Am I correct in assuming this or is it more complicated than that, or not possible? Thanks.