Hay Dom
If you consider the Porka anchors have a look in my build thread for part numbers and links to DaveB's NQSBBK thread etc etc, page 1 in my thread IIRC. Great set up and more than capable of looking afte my Stage2+ Mistress. My set up was under £1k once and that's once id had the calipers refurb'd, bought the fitting kit, added new discs and new pads and shims, fresh fluid and fitting so not too bad.
And yes you'll need spacers for the NQSBBK if you have 7.5" ET51 whereas you won't need them with the R32 calipers with those wheels. No need for spacers with most set ups if you have 8" ET44 (ish).