The starter aligns by the pilot on the nose of the starter in the transmission, so I wouldn't think a bushing would be necessary. Just use a washer and be done with it.
True, but Chrysler used a stud with a shank that fit the hole.
The tolerance for the nose cone is pretty wide. The only one I ever checked (summer of 1981) was on a brand new Lakewood scatter shield and my 1972 OR bell housing. IIRC, the OE bell was much looser than the Lakewood, but they were both pretty roomy. Like .060 or something.
With that much room when the starter engages the flywheel it tends to pull the starter closer to the flywheel.
