Its looking promising for these calipers, couple of installation issues which are far from insurmountable, which are not "engineeroutable" more to do with the differences in production of the caliper.
Dave, are you going to be making the brackets available for purchase soon? Also, what are the installation issues to watch out for?
I'm really eager to upgrade my brakes with this kit. 
Well simply put the discs on a boxster are 24mm wide and we're using a 25mm disc so the gap between the pad pegs and the disc is fairly tight, its not a problem and we can engineer a bracket to position the disc centrally but its not interchangeable between calipers because not all calipers are the same.
Add to that a bit of track heat and its too close for comfort.
The simple answer which we achieved with Joes brakes was simply using a dremel tool remove approximately 1mm of material from the ends of the pad pegs, this gave us loads of clearance and the clearance issue didn't rear its head even after Joes best efforts in shermany.
Just to review where we're at.....
Brackets and VAG/Porsche HEL hose kit £200 delivered
In addition you'll need these off ebay item number 260600046912 or similar, porsche part number 986.351.421 & 422.
These can be purchased from Porsche Brand New for around £395 and a pad fitting kit is about £30 Pagid Pads maybe £40, 8 pad dampning shims about £30
If you buy some late model boxster/cayman calipers from ebay you'll probably pay £250 but you'll get the pad fitting kit/shims/pads probably thrown in, OEM pads are very good quality from Porsche and I personally wouldn't have any qualms about tidying them up and reusing them giving them a couple of 100 miles of very light use to give them a chance to bed in.
Brand new 312's are £60 for aftermarket ones, I've been debating whether or not OEM originals or good quality aftermarket 312's would be best but to be honest you need to treat them as disposable.
Joe for example seems to have got some pad deposits on his discs so naturally the next couse of action would be to skim them, but for an additional £30 we could get new ones - see what I mean .......affordable hooning
Joes Track pads were by RED pads by SBS, they aren't in production any more as SBS didn't really push them hard over their normal OEM aftermarket products. The Mitsubishi EVO guys rate the SBS pads for tarmac rallys and such like but Joes pads only cost £50 and probably have got 10-12mm of material left for another couple of track days
So for as little as £500 (£200 to me, £250 to ebay, £50 ish track pads) you've got yourself a track capable 4 pot setup that appears to be holding its own. If it all goes horribly wrong and everything gets toasted/warped/cracked/fcuked you spend £60 on some new discs and put your road pads back in and drive home......
Joe was pushing (from what I hear
) and didn't get any fade, having said that the ring isn't too bad on brakes, I'd feel better if we'd had a chance to get them round Oulton. In addition joes discs were just plain items not drilled , not grooved which would also help
Stage two of development (a lightweight two piece disc option ) is going on hold for a little while as Stokey plans have changed.
Ive got a carrier/hose package here now and I've got a set of refurbed red calipers that were going to be stokeys, they are very presentable that somebody can have with a fitting kit for £300. I would do it for a little less to somebody who's got some track days planned and was running monza II's and would help with some more feedback etc
