I gave away my Ebay front STB. It was worthless. I could see the mounting point flex as I shook it. I am not sure about the FM and other expensive ones, but to me if I were to get one it would be OEM only. As for CSP I have the stock sways. I am not sure what I am going to do with the car, so I am holding off on changing anything for now. If I were to do sways I would get the biggest front bar I could and keep the rear stock. The car rotates enough as it is.