I have had a pre Mexico set on my 4spd car for 20+ years yes they work They brought my a body up real high to the point of needing a new alignment. True a set of traction bars work just as wellor make you own but you cannot always duplicate the spring rate also they were cheap as far as I was concerned and a one night change over in my garage on the floor.Don't really care who likes or dislikes them they are what works for me