Chrysler Engines

Fyi, there's three crank options.

Drilled to fit. I.e. an oem four speed motor.

Rough drilled. The hole is there, but it's too small and not necessarily precisely centered. NAPA had a thin wall bushing to fit this crank, but my 360 was not centered so this wasn't an option. How they drilled that out of center, at the factory, is beyond me but they did it.

Some cranks are not drilled at all.

The roller bearing pilot works with the first two. You CAN drill a rough hole in the crank if you desire if you're in situation 3.