Big, heavy, cool arse Tower of Power 6cyl. I'd bet it's nearly twice as heavy as the Yamaha mentioned above.
1.5X as heavy as the Yammy w T&T...
Not to talk you out of it, but since it's not a show boat in need of a vintage OB, and is meant as a fix and go boating/fishing rig, is a 1967 OB a great 1st choice? Which is really out of character advice from me, given the motors I've got and esp the one I had you grab.....
A running 950 Merc for $750 w/ controls and harness is certainly not out of line, IMO, but price a distributor cap... ouch, if you can find one.....