just a note, those who have the GC coilovers and want to install the GR2's. you will need to do a slight modification on the 2 front struts, because the coilover sleve(metal cylinder part) will not fit over this small disc part on the strut. You will need to grind the disc smaller until the GC will slide over it. This will void warranty though. Just a note for those wanting the GR2 for the GC coilover