Quick Question.<br />1983 Glastron SSV 151 Mercury 50hp (rated for 90) No tilt/trim<br /><br />If I were to find a good deal on a nice used motor (75hp or up) for my boat, how easy is a swap? I assume the easiest is swap a Merc for a Merc. If it was a Merc swap, would it just be a matter of...