The coilovers in my R32 seem to be making a clunking noise over bumps, I'm wondering whether to replace them totally & convert the car back to factory standard suspension with lowered springs to keep the same ride height, or, to rebuild the shocks. I think they're adjustable HKS one's. The ride now is rock hard, railway lines are a nightmare, if I was to revert to factory standard does anyone know whether this will have a dramatic effect on a street driven car, it's not used on the track. The other question is: are used HKS coilovers worth anything?????.