I checked online, and you can get the seals and o-rings from NAPA, but the gaskets are going to have to be from an AGCO dealer. You will need:

1 of 163 808A gasket for the cover.

12 of  K 2055 o-ring. This o-ring is 3/32 (thick) x 11/16 ID (inside diameter).

1 of 167 010A gasket for where the lever bracket mounts to the main housing.

1 of 104 881A seal. Napa calls this a transfer case seal, as it is the same seal that seals the shifting shaft that comes out of the side of an Oliver transfer case.

1 of K 2027 o-ring, 1/8 x 7/8 ID

I haven't taken pictures yet, but should be able to do that tomorrow. 

You can cross- reference Oliver parts numbers at Napa by going to <!-- w --><a class="postlink" href="http://www.napaonline.com">www.napaonline.com</a><!-- w --> and about halfway down on the left side and click on [b:sq9odv97]Search Napa Catalog[/b:sq9odv97]. If you enter an Oliver part number in the search box, be sure to also click the [b:sq9odv97]Interchange[/b:sq9odv97] button as well, or it won't come up with anything.

If you want to look up the Oliver parts numbers, go to <!-- w --><a class="postlink" href="http://www.agcopartsbooks.com">www.agcopartsbooks.com</a><!-- w --> . You'll need to be using Internet Explorer for that one, and log in as a guest.