mine's doing the same thing, that is the drive shaft noise.........
and your fuel pump(s) will be noisy, if the car runs and drives just fine don't worry about fueling issues you don't have. i have heard noisy pumps last for years and others that when they started making noise didn't make it a week. no way to tell how long parts will last sometimes. just keep rocking her until you have an issue, then fix.
but good decision on doing the timing belt, that's preventive maintence i totally stand behind.
sexually assault a member of the VW community? if you belong to dubdojo or swov.org they will gladly circle their wagons and support you.