Bill,
I found a nice shape used unit that I can sell you for $25.  It has both
rollers on it (the aluminum piece at the bottom of the door) and they
are in good condition.  The larger of the two that sits vertically is
actually $75 now from the VW dealer.  Not sure how you could make a
similar bearing work.  The horizontal one looks like a normal bearing
that you might be able to get aftermarket but the vertical one is a
whole different beasty.

Let me know if you are interested.

Ken Wilford
John 3:16
www.vanagain.com
B Monk wrote:
> I need the lower vertical bearing for the sliding door on a 87 Vanagon. The part new is
>   75.00 and the horiztl one is 25.00 new. I really need the vertical one as mine is toast.
>   If anyone has one in good shape on a parts van I could really use it. Let me know what you
>   want for it and if you'll take paypal,check in the mail ect.. It would need to be shipped to Mystic,CT 06355 or if your local I'll come get it.
>   Thanks for your help,
>
>   Bill
>
>