opinions on my '65

I'm looking for some opinions on my '65. I've decided to sell it after some repairs it needs. The front end has to be completely done and the 170 in it has a few ticks and the oil pressure is low. So I will be doing the front end and brakes, and figured I'd pull the engine and replace that. I'll spray the engine bay and detail everything, and it will end up getting a new exhaust.
All that brings me to the poll... I have a 225 with a 4bbl to replace the 170, or, I have all the stuff to stick a 4bbl V8 in it. The V8 option will be a little more cash to get done just do to getting the 273 running, or grabbing a 318 to drop in it. I had intended to go with the 225 and do a lot of work to it but for resale I'd just detail it, stick a cam in it, and add some headers.
So which does the majority think is best? 225 4bbl or V8 4bbl?