Regarding two bolt strength.... a Mopar isn't made of Swiss cheese like the SBC. The iron is quality.
Have you ever looked at the main bolts in a SBM? Beefy 1/2". GM? Spindly little 7/16". No wonder GM needs 4 bolts.
Same with Mopar cast cranks. They are tough...not sure about the Ho Chi Min variety but the OEM cranks are tuff. The owner of one my Chevy loving engine shops asks.." when was the last time I saw a broken Mopar crank? Never..."
I'm rebuilding my 388 SBM race motor with good parts and machining and won't spend $5k on it. Granted I have the heads, block and tins but everything will be new or repaired...pistons, cam, lifters, springs yadayadayada. If you spend 7k you are wasting money.
