Ohio or Molnar crankshaft?
No exp with Ohio but I used a 4" Molnar in my 408. Clearances were dead on and nice quality. My machinist is a Mopar guy and uses them a lot and likes them and he's pretty picky. I don't race my car on the track much but I run the crap out of it on the street and have about 15,000 hard miles on it trouble free