Dave, Also try energy suspension on dust boots, they make polyurethane ones that are very nice and availble from Oreillys, I am not positive but alot of the circle track items, seemingly mainly steering say not for street use, including u-joints and such, I called at one time on some of these and if I remember they said that circle track cars where serviced frequently, at least yearly on their parts and heck a street car though not as abused is much longer and probably for insurance they are listed as that. Their are some ball joints in the style your after that have a teflon race so steering is much easier and no lube is needed and I believe they are for circle track cars also as to combat the dust. I know I didn't answer your question directly but the Moog line is good stuff, getting those ball joints out can be a pain, the tip I found was clamp the ball joint flat in a vise and put a cheater pipe on the tube of the arm and unscrew it as the cheap sheet metal wrenches from Speedway won't come close to getting the things out! You can call an expert at Lakeshore Fabrications in Columbia MO and ask him at (573) 875-1500 he told me the tip of getting them out and can answer any suspension question probably. They use to make all the Speedway items listed under their own brand (not sure if they still do) but the guy is a true expert. Best of Luck Matt