This won't fix delta's problem, sounds like he's dumping too much heat into his brakes for 294mm rotors and/or current pads to handle.
The 316mm rotor and caliper to suit is found on BL/BP turbo and 3.0R excluding Outbacks and all BM/BR turbo and 3.6R including Outbacks. Tribeca and GRF WRX STi A-Line should in theory have the exact same calipers, but those are harder to get hold of anyway.
The rotor you need is DR9541V - I stock these but most parts places will be able to cross the number over. Bendix number for the pad to suit is DB1722.