It's not like I could tell you how my brakes perform yet, considering they've been in boxes for the past 2 months, but I got myself the Baer GT+ system with 14 inch front rotors and I'm using their touring 12" disc system on the rear with PBR calipers all around.
I liked the GT+ system versus the track system because of the extra rotor surface area (275's up front will use the 14 inch rotor nicely) plus it uses the new C5 caliper versus the old C4 caliper, given the C4 caliper is still amazing as well for resto-mods.
Oh yeah, plus I got my kit for DIRTTTTT cheap