1984 633csi Automatic with 200,146 miles on it passed CA smog test today. I have owned the beast myself for 5 years and have done much work on it. The exhaust and cat look original. I replaced the O2 sensor Feb 97. I have done all sorts of electrical work and engine management repairs on this car over the years, some quite complex. None of it would have been possible without the help of this board. THANKS GUYS! Does anybody know where I can get some improved rear sub-frame bushings for my e-24? How about some good tipps on sway bars? Who makes the best castor-camber kits for this car, KMAC? Bavarian Autosport? TRD?