i was wondering if anyone knows of a source for identifying which of the
first three digits of volkswagen part numbers go with which volkswagen
chassis.  for example all of the vw part numbers that start with 025
appear to be parts that were made exclusively for the vanagon chassis.

i'm not looking for old air cooled numbers i am primarily looking for
water cooled numbers.  i am making a small database of these numbers for
myself for quick sorting reference, when dealing with my spare parts
collection (read junk collection).  i would be interested in any thing
that you have but my primary interest is with the following vehicles.

75-80 scirocco I
81-88 scirocco II
81-84 rabbit
80-92 vanagon
87-90 fox
86-88 audi 5000 quattro
88-92 golf
88-92 jetta

thanks in advance for any help that you can provide.

jonathan