I haven't tried kyb gr-2s. I have tokico blues on mine with tokico springs,1.5 inch drop. They make sqeaky noises when i go on dips and speed bumps. I still think it has a lot of body roll when i make sharp turns. One time i was going down an off ramp at 65mph while the suggested was 25mph my cap spun out. It turned 180 degrees and i was facing opposite traffic. That's considering i had 4 strut bars and falken ziex 512 tires. If i had to do it over, i save my $$$ and get TEIN dampers. For the record tokico HP are just normal driving. Heavy cornering causes major body roll.