I've decided to fit the above boost controller when I change the turbo next month to a 28R. From a bit of Googling, this place seem to be the cheapest @ $279, i.e about 160 quid.
Anyone know anywhere cheaper than this ? They want $39 for shipping, even with that they are cheaper than most UK places I've found, by a long way.
Ah, the one I'm looking at is the Profec B-Spec 2, slightly different to that one, and that one's been used as well, so I think I'll probably go with the Yank supplier.