The Bentley manual is a great resource for this van, I have the hard copy but I have heard good things about the CD/PDF version as well (searchable and stuff).
GoWesty is ok for parts, they focus more on Vanagons so the selection is limited. For specific parts you can also look at europarts-sd or eurocampers.com. Some parts you may have to find used, either by posting in forums or the Yahoo Eurovan group. If something has a VW part number I usually order from WorldImpex or 1stvwparts since they are cheaper than my dealer, though my dealer does have a discount for VW club members.
I'm not sure about your specific parts off the top of my head but these sites might get you started.