If your going with eggbeater's I would call Dave at DCB & set up an appointment & have the boat checked out = motor's, control's ,transom strength etc etc / DCB should have a flat $rate$ for that= it will be worth it = every time I have dealt DCB they are very fair & professional / If you are going with an I/O I would call Greg at GS Marine in Norco & have the boat checked out . A Little $$ out of pocket now could save you a lot of $$$ later !!