I didn't read the whole thread, I'm a lazy mofo.
Why not just do a 4V swap? If you want the 4V power back, then get a 4V in your car. Personally, I'd test your current motor and see how it's holding up and if it all looks good, throw your parts on and have fun. If you want more, throw a S-trim on it. That gets old, build a 347.