So I just repowered the aquasport with a new to me 2003 200hp saltwater serier Merc. It weighs the same as the 150.
It's kinda fast now.
Still need to find a new fuel tank. I wish it was still a stock part out there some where but i'm not counting on it.
I'd even be satisfied with a small capacity tank if I could find one that would fit.
And the boat needs mostly rewired and lots of new gauges. That's not so big of a deal.