The Mr. Dangerfield engine = 318.
There is a significant bore size difference. 3.91 to 4.04. You can't bore it out that much, but if it sonic checks well.....
Pop quiz! What MoPar speed shop takes select 318's out to 4 inches and installs a 4 inch arm for there create engines?
The teen is only down on hp due to bore size. Adjust that, as much as possible, if your so inclined and you'll be OK. At .060 over bored it is 327 cubes. Them old crap *** Chevy 327's ran pretty OK. Now take a few bennifits we have over them .... it should be good to go.
Funny though, I was just looking at turbo & twin turbo kits.
Turbo anything and add lots-o-power.