Parts should be available sometime in October. It won't be in the 2002 FRPP catalog, but it will be in a flyer they hand out at the NOPI Nationals and at the SEMA show. Pricing ought to be in the general ballpark, but I don't know specifically what (it'll be set by the retailers).
Locking effect/torque bias ratio should be higher for the Torsen vs. the Quaife, which means better traction performance. FRPP got too much wheelspin using a Quaife with the FR200, the Torsen didn't.