Absolutely love the 2008 Racetech Swingarm that we have. I just pulled the ad down to get the car ready for race season, but if you are looking, I am still selling. Can make it roller to turnkey or just hook on to the trailer and go. Bottom line, love the swingarms. I do agree with Hammertime. The Undercover is over priced and the quality is just the same with Racetech. Never had a Miller. He uses a cantilever style suspension which I have never really cared for. Just preference wih a very simple mono shock swingarm design. Good luck to you. I you want photos of the Racetech, let me know.