Just thought this might be helpful information for some of you. I have manged to get the individual part numbers for Samco intercooler hoses for a uk 99 car with the prodrive lower y-piece and hose. These are the same hoses as on the p1 etc.
The (very) reasonable prices given are from a well known distributor. If you mail me, i'll let you know who!
Peter.Quigley@talk21.com (mods- any chance of having my e-mail address put on my profile??? Pretty please???!!)

Intercooler to throttle body TB211 (£3.96)
Dump valve to inlet (c-shape) TB727 (19.82)
Turbo to intercooler 45 degree elbow TB212 (didn't get price)

All these are plus the dreaded VAT

Just thought it might be helpful for those that want the othere silicon hose but want to keep the prodrive one.
Bad news is, its a 4 week wait for individual part numbers! DOH!