Pre-Face Lift 4.2 Timing Belt Parts Scarcity?

[Barrosco]

Hi all!

Glad to see there's still a thriving community for these cars. I picked up a fairly nice example of a D2 Quattro earlier this year on the other side of the pond that was immobile. A quick valve body fix and she was up and running again. However, the car came with no maintenance records whatsoever and I'm almost positive the timing belt has timed out by now.

As I've been searching to acquire the necessary parts for a belt replacement I've found that some are more difficult to find now, and others are simply not available.

The one I'm having the most trouble finding is the tensioner pulley, which used INA used to have an offering for.
PN: 077109243A

And another troublesome one is the harmonic balancer bolt.
PN: N 905 428 01

Has anyone had any luck finding a source for these in recent times? My search has included some results from the UK, but no success on any of those so far either.

A quick picture of the old girl in need:
PK7S1415 by Alex Barroso, on Flickr

Thanks!