The springs were Eibach and the whole kit was about $250 but the adjustable part isn't like you desire. These have a roller ball, that is pressured by a spring, into a groove that stops the side to side movement; then the up and down movement is kept in place merely by the pressure of the coil spring. It's a little low tech compared to what you want (like the Kerschers pictured below). In fact, the Kerschers are about $570 and would be the best because when building your own (after parts, welding, and powder coating) it would cost almost the same.