Just an update for anyone that cares. I put the modern seals in and everything fits nice with no scrapping and feels smooth. The inner seal seems to fit just fine. I was worried about clearance between the old felt seal and the inner bearing. I did have to tap back the leather backed "seal" a little with the end of a 2x4; so I had enough clearance for the near inner seal to fit. It is a little snugger after I tightened down the adjusting nut like before due to the tight seals, new grease, and it being 20 degrees. Info provided by a poster on OldGMCtrucks.com states the Master parts manual lists the part # 675758 which is a felt seal or a stamped seal with part #2098655. Hopefully this info may help anyone in the future.
Please response if you have any other words of advice,
Thanks,
Hilarious
