Just bought some progress springs to replace my ground controls. Since I cut my stock bump stops, do I need to buy new stock bump stops for the progress springs or would be fine to use the cut ones? And what other parts do I need, since for the gc's from what I remember, for the fronts there was no need for the upper and lower seats. I don't remember for the rear's, what else do I need to buy besides the seal, upper seat, upper/lower bushings???

Thanks...