Righto, knocked over the booster conversion today.
I'm not going to write up a "How to mod a MK3 booster for one of only 3 remaining B1 facelift Passats thread" You can read about it here instead.
The usual suspect.
Master cylinder off, and looks like it's long overdue, the booster is full of brake fluid!
Heaps came out when I drained it.