I'm still learning about engines, but what do you suppose an extra 1/4" in stroke would increase compression by? 1-2:1 maybe? If I were to do this, and I'm not committing to anything, I would probably do a budget/junkyard build for fun and use what I have. Maybe find a wagon, convertible, or Colt for it. So, 3.54" crank machined down if reasonable, stock pistons if they're good, 360 heads, 360 rods if they're better than the 273 ones, maybe a 340 spec'd cam from Summit, cheap dual plane intake as I think the M1 I've got would be overkill, 500-600 cfm carb, etc. If the compression is low enough, I'd probably just top it off with my Paxton supercharger and throw 4-5 lbs of boost on it.
