I picked up a pair of S.S. springs for my sons 71 Duster. The P.O. installed solid front bushings. They seem in good shape, I pulled the rotating insert out and it was greased and looks pretty good. My question is what can I expect if I run these? His car is going to be a very mild small block with a 4 speed. Probably wont ever see the track, just limited weekend use. I don't have a problem replacing them with a rubber bushing if needed.