273 or 225?

@tandart66 can you clarify what rebuild your 66 dart means? Are you doing a full restoration, or focusing on certain areas as issues present themselves?

I replaced the 225 in my 65 dart with a 273 last year. After 4 years of collecting parts. Still didn’t drive much this year because of life stuff, but some mechanical things that I want to address (like now I’m focused on suspension and steering, and replacing rotted floors, etc.). The answer to the questions above may help folks respond too.
I guess just getting the car running and really working on it down the road/as issues arise. The car itself is in great shape, just the 225 seized up, I bought a new slant core for 50$ and intended to hot rod it out a little, and get some power out of it. But now that this deal has presented itself I think the v8 route would be more satisfactory for me.