Sounds like a good idea,
Do you have a boat to start with, if not, i can give you a 17 ft marshan which had a 150 merc on,
The merc was sold but the hull is in my field requires some work on the wood / glass floor and a paint job, the transom / top deck are sound.
£50 would take it away for something like this, Davy Anderson would sort you out with a trade in engine if you explained what it was for i would think.
I take it the idea is to have the guys have a project seeing it through to getting to use it?
I work in a large engineering shop, so if you need parts machined or painted
i can help, the only payment the lads would ever take is sweets and cola.
I am only about an hour away from you
Regards Garry ( Fife)