If your '82Westy still has the original older-style filler, with the locking
cap rather than the locking cover, there are 34 different key possibilities.
  There are no codes on the locks.  We can make a key from the cap, however.
  It will need to be removed, but that's a 3 minute job.  Let us know if we
can help.
Steve Sandlin, Registered Locksmith
Steve's Lock Shoppe
http://www.steveslockshop.com
'84 Wolfsburg Westy
'79 Transporter
'00 New Beetle