eBay for both mate, been looking for either 996 or 986 calipers for a while, managed to get them for just over 200 quid and the same for the wmi, might add a few bits to the wmi kit as its pretty basic, still waiting on a few other bits to get here such as an mk4 r32 rear arb and few maintenance bits, hopefully ill get to 330 or thereabouts with the wmi then ill be done pretty much. Hopping to get a seperate block and large port head to do a big turbo build at my leisure.
Sorry it's boxster 4 pots mate...