Hi Zach,
Interesting, looked at the parts manual(revised 3/69) and can't find a depiction of either an alternator or generator.
Went to the Airplane Flight Manual (Fuel Injection Models Only) that came with the a/c, signed 6/30/65 and last revised 1/6/66, and looked at the equipment list, page 7, sec.2 and it lists as the only option; "Alternator, 12V 70 amp. Delco-Remy No 1100660 or 1100717"
No mention of a generator what so ever.
Good luck, Don
PS I agree with regards the belt although had a friend use his at Johnson Creek, Idaho to good effect. Mine just gets replace every time the prop is off. On the seal I think if it ain't broke don't fix it as the big thing there is to get it glued properly on install. You'll be cleaning small drops of oil off the front of the cowl and the windscreen when it starts to go.