Having had a brief look I can't see reasonably priced pipe pieces - its looking like about £40 for the pair. Its a pain being over here. In the UK I could easily take a shot at changing them and if they break order replacements to arrive tomorrow at reasonable delivery cost, or even get them from a local parts store. Over here though they're either stupid expensive or long delivery delays and postage from the UK.
It looks like a different part number on the 1A (2000+) cars which is a shame because I could remove the ones on my parts car first to make sure I had ones to fit.
I have pieces like the right one in your pic. They are used to plug the holes in a spare ABS modulator I have. If I split at the pipe/hose connection I could plug the hose with one of those, remove the old bits, tidy the hub up, install the new bits, then remove the old hose and connect in the new one. Sounds like a plan