273 or 225?

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.

What kind of mechanical abilities do you have? Have you ever done a motor swap, or transmission repair/adjustment?