Ok, so today I did a little more checking. The part number on the flywheel is definitely 2135483. The fly wheel also has GMC cast into and D32. So at least I'm looking for a GMC starter.
On a hunch I measured the distance between the teeth on the starter drive gear and on the ring gear on the fly wheel. The drive gear measures 0.35" from tooth to tooth. The ring gear measure 0.32" tooth to tooth. I'm no machinest but I don't think gears will run with that much difference in just one tooth. The teeth on the drive gear are also "taller" than the ring gear, thus they don't fully mesh with each other. The teeth on the drive gear are wore so that they look like ocean waves, if you can picture that, instead of triangles.
So now I guess what I need is a lead on the 2135483 part number. Maybe then I can determine which starter I need to start looking for. That failing, anyone have any idea how to find a drive gear that will properly mesh with the ring gear? Thanks y'all.
Scott