Probably a real dumb question but ....

In a boat application can you run a water to air intercooler with water from the lake? I know probably yes but I don't know about boats
Absolutely you can and lots of guys do and it works awesome because the lake water is usually well below ambient air temp. My problem is space, I want to keep everything under an engine cover, and to pull another water source from the jet I’d have to drill and tap the bowl. When it needs rebuilt that will happen. Right now we met my power goal on low boost and it’s safe because it’s a blow through carb and the temps are completely reasonable.