bucwheet70
New member
I am running WBS 13" kit on my 04 GP. I am running 17" wheels from an 05 Bonneville and they cleared with no issues. The slotted rotors that came with the kit warped after about 15000 miles on my daily driver. I looked up the part numbers from the rotor boxes and the Monroe pads that came in the kit, and found they came from a late model Buick Lucerne V8, or Cadillac DTS. The rotor is .04 inches thinner than the GXP rotors(found that one out the hard way). Will upload an installed picture if i can get my p.o.s camera to communicate with my computer.