[79 Phoenix]

Thanks for the link to that thread! No, I hadn't come across it. I am reaching out to the place (link) you sent me earlier and another place drivetrain.com to see if they can help with this. If need be, I can make a gasket for the side cover and I think I may have found a tail shaft seal (link below). So, althought I would like a whole gasket set, that bearing retainer o ring is all I really need (I think).

Hopefully, when I get this apart everything inside will look okay.

https://www.ebay.com/itm/293080558115