I Need A Shrink !

[gofastsandman]

That power combo is a time capsule. Look at the paint on the prop! 90% sure the hrs are original. Volvo car and marine engines were red late 60`s- early 70`s. The old b17/20/21 car/boat motors were amazing, but that Chevy is RED. Outdrive looks like the same vintage.
Ask your wrench if you should pull the plugs and shoot some Marvel in the cyls.. You could get 2000 hrs out of that.
Is the carb a Q jet? {small primaries}
Heck update the ignition, add some crash pipes, new brass freeze plugs and go. I think their is an additive to help old seals rejuvenate. Made by Lucas?
Cheers,
GFS