Locally i would pay maybe $40-50 for a premium 'GM 11"' rotor and $70-80 for the 'GM 12"' rotor. And thats nothing special. Still could be made in china, not coated etc. Look into Napa premium rotors, or Centric premiums. Even Raybestes. They're all e-coated on non pad contact areas so no rust...
Don't buy fleabay rotors, they're prolly econo rotors drilled and coated.
And yes, each different rotor size has its own caliper bracket to ensure the pads in the right spot.... how the hell else would it work?
And yes, you're stuck with the not GM 11 and not GM 12.
97-03 GP's had the 11's, montes from 00-05 were gm 12 and 04+ GP's were in the middle.
Stupid yes but thats the truth.
And if this were my car: centric premium rotors + EBC red stuff pads.
