I use Tein as raw as they are they do work well. On a test day at Brands my car was 2 secs a lap quicker than JRM's Evo X 400 RS on AST's. They had two drivers {pussy's} for a comparison + suspension techs. I had the same set up from the Ring. Only 6 corners on the Indy track & two/three i got wrong in my eye's.