Yet more 4kq questions

[Jim <jknittle@sundown.sdsu.edu>]

Hi again,

I want to thank all of you who have been posting answers to my questions, I
really would like to purchase a 4000sq (preferably of '87 vintage) but I
want to make sure I am not getting myself into too big a financial hole.
Unfortunately quattro audis are a somewhat rare in Southern California so it
may be a while before a good one shows up.  To fill in the time I have come
up with some more questions:

The AC in the 4kq, was it usually a dealer installed option, or factory?  Is
it based on a Sanden type compressor or maybe a Yorx. Would it be
prohibitively difficult/expensive to convert to R-134?

How are the quattros off a paved road?  I've read many posts where some of
you have been in nasty mud, snow and dirt, and so on.  I'm not interested in
a small SUV but I would like a car that can hold it's own on a rutted dirt
road and in snow and icy roads.

I think I remember a post on this one before, but humor me, The  power
accessories - are they fairly reliable? are they mostly vaccum or electrical?

Again, thanks for all your help,

Jim