Looked in the Haynes yet mate?
I only adjusted the front doors and found the bolts are a pain in the arse to get to. You need the correct tooling. Recommend you avoid the cheap stuff as I bent the first ones and improvised something from the damaged bits. The bolt heads are XZN bits (not spline or whatever people might say). Check this kit out for some ideas of what you need to buy/fabricate:
http://www.samstagsales.com/vwaudi.htm (item number 12149-XZ)
I guess its a similar story with the rear door hinges......
Mark position of the current hinges on the pillar with a permanent marker as a guide. The doors are
heavy as fook, so have a pal ready and willing and a support underneath. Start removal with the bottom hinge and go from there.
As for disconnecting the door wiring etc, I'm sure the Haynes has the necessary info.
Careful fitting the new doors up as to not damage the paint work, suggest you use some masking tape or similar at the areas that might knock/contact. Re-align hinges to pen markings tweaking it into place and nip the fittings up. Start with the catch plate at its central position. If the hinges have dropped, use some discreet washers to push the hinges up. This is more long-term than the "jacking them up" trick, unless you replace the hinges all together.
Changing over the locks is easy, find a guide on de-locking and just swap the barrels over.
Hope all that helps a bit? Good luck
