The NQSBBK (or not-quite-so-big-brake-kit) developed by DaveB1970.

Taken from muckypups review.....

The calipers in question are those from the front end of a Porsche 986 / 987 Boxster / Cayman. The part number is 986.351.421 and 986.351.422 for the other side (those from the 996 Boxster and beginning with the 996.xxx part numbers are not what we are looking at here nor 986.352.XXX which are rear calipers).

Each caliper has the 4-pistons coming in at 36/40mm each side which is the same as the 996 Carrera 2 so they promised to be a performer even at the planning stage. This is opposed to the single piston (albeit a very big one) on the standard MkV/VRS or R32 setup.