I am working with an aftermarket company that make a-arms for all the other machine but doesn't have access to a ds. So I am letting him use my machine to develop new upper arms for the ds. He says that the timmy boy arms don't smooth out the caster and camber enough. He says as soon as he get my machine he will get some prototypes made so we can do the r&d. If you are interested in these arms e-mail me. I am working on my web page and will have the adress published in a week. the arms should be at a great price I sell all his other upper and lower kits with new tierods and bushings for $450 so the upper's should be a good deal.