Leaking rearend

[Chris.S.Mottram@ecc.com]

Underneath my MK1a is an arc of rear end oil where it was slung by the
Ujoint or drive shaft as it leaked out of the front of the rear end.  What
part(s) should I order to fix this?  Just a seal?  I guess there is a
bearing in there too that could have gone bad?  I didn't hear any weird
noises.  I just noticed it when I opened up my "battery box" cover.

Thanks,
Chris