If they are so far gone, why would you want to run without them? For the sake of a few quid each all that **** that has rotted them would have ended up in your breaks... I have just baoght a set for my 1994 300 Tdi 110; part numbers were:
FNS = LR017961
FOS = LR017960
Sorry about delay had to go out to the dining room to look for the part numbers...