I am trying to change the pinion shaft seal on my 11 1/2 G80 diffrential. I have run in to a big problem and hope someone has solved this issue. The seal is too part a female tri lip seal that is in the diffrential case and a male sleeve that in pressed over the back of the pinion yoke. Female seal is available any where, however the only place I can seem to get the male sleeve is to by the entire pinion yoke $300 bucks from Chevy direct. Not really wanting to spend $300 bucks for a $20 dallor seal!..... Please let me know if you know a source to by the parts?