273 or 225?

To all of you that are fixated on the engine. It's not about the engine. IF a V8 swap was to be made, getting a donor car makes the most sense, especially an early A. You swap the whole drive train, you have a radiator, exhaust manifolds, HD suspension, gas pedal, accelerator cable bracket, steering link motor mounts. That particular car looked like I could get it running in an afternoon. That being said, for Tandart66 nothing wrong with a 225, and less to change. Replace the freeze plugs with brass ones, new gaskets and seals while the engine is out, maybe put a double roller timing set in also. If you want to soup it up that is another thread. Best of luck.