I have a 90 camaro rs and i have 1le pbr's all around. Its the ssbc so r they ss i would guess cause i wanted to buy some that wouldnt rust. So that xtra life plating is prob just to make it last longer as far as not wearing down as much?? Also u think those would be good brake pads. It sound like a ok price for the 4 wheels kit so i guess it comes with all 4 rotors and pads look like pins also SSBC 1LE slotted rotor kit