Get another 40HP and rig that OX with twins...now that would be something! I wish I had a spare 70-90hp laying around, I'd rig it for some fly fishing...I love that open deck.
Anyways, there is a 17 Del Quay Dory Center Console for sale on Hampton Roads craigslist...its listed as a trade for a camper but has a price tag of $4000 also. Think of Del Quay as the British version of Boston Whaler's Montauk. Tough boats.
Good luck with your search...it's a buyers market....wish I was in it!