225 Slant 6 crankshaft issues

Yep what they said.
Clean up the counterbore that the roller bearing fits into with some sandpaper and you'll be good to roll.
The tip of the A833 input shaft will just extend into the cavity where the oilite bushing would normally be.

You may find that the bore in the crank may not be deep enough for the shaft to fit without bottoming out. (Preventing the transmission bolting surface to fit flush with the bell housing face.) If that happens the easiest fix is to cut up to 1/4" off the end of the input shaft and re-chamfering the tip.