I am going to check out a 45 HP Chrysler this Saturday. All I know is it runs fine and is electric start. I am looking to put it on a 14' rubabout, what things should I be looking for?? I was told that I need to match transom depth with the outboard leg. How important is this? And Where do you measure from for the transom Depth? THe middle? Sorry if these are dumb questions but I am a newb. Thanks