when i did my clutch i had the tranny out and replaced every seal i could-
rear one and the drive-shaft ones. It can all be done w/o special tools.
It is really easy to do actually. Getting the final drive flanges off was
easy. P-mail for details on how to do this.
BTW, a get the seals from the dealer today. (you need 2x final drive and
2x dustcaps (that go sort of behind the CVs) and the rear one. I got all
of my seals at an air-cooled vw place (Donsco in Belmont CA). The seals
are the same as type2's.

-matthew

Matthew Pollard          "Racing with the wind and flirting with death
Dept. Of Chemistry        So have a cup of coffee and catch your breath"
University of Idaho
www.uidaho.edu/~poll7356