Oh man, you should have got the other one... no just kidding Paying a little extra for a screw drive is probably not a bad idea. Typically anything used for less than half of new is pretty good. Since its a current model, you can get a manual online, which will describe the mounting. Apparently there is also a software upgrade available as well. You can buy the bushing for the boat side from Menards. They have a pretty good stock of standard sized bushings. I would suggest buying the pin from Ebay, as the ball on the top is sized to the plastic tip, so it snaps on. Any piece of stainless will work for the bracket. I bought an L-bracket from Menards and just bent it to the right shape.