From reading many many threads online, you dont 'need' an alternator supressor... At the fear of it looking a little Pikey im not going to bother... Also it doesnt prevent 'Alternator Whine' in headunits/amplifiers which is a common misconception.
If you do want one, goto halfords to the ICE Interconnects section 🙂
The little FPR hose, i used some clean windscreen washer hose from an old polo :p People recommend ripping some out of a Vectra/Corsa at a scrappy though.
The Servo hose 3-way take-off valve you can get from Vauxhall... The part # is on those threads above (it starts with a #9 iirc!)
I think thats it!!