Ok, here are three photos.
I thought at first there might be interference with the oil pan but don't see any. Unless you have to lean the starter in from the crankshaft side and the pan won't let me do it. I don't remember if the starter was in BEFORE the pan last time or not. I do remember the pan was a PITA to install before and much easier this time when the motor was on the bench instead of in the car on the lift.
Here is the starter nose. It is the one that came off the car.
Here you can see the gap that won't close. The problem appears to be the center of the nose won't clear the flywheel. I expect if I dropped the pan it would go but Dam I don't want to do that!