Pretty much the same here....I installed the bracket on a 1990 760T. The bracket is still intact, and there was a noticeable but minimal improvement. I have a new set of (7) accessory bushings (alternator and A/C compressor) on order from Volvo in the optimistic hope that the vibration is something "simple". So far, over the last few years, a new idle control motor, various tune up parts, new hydro motor mounts, pulling and cleaning the injectors, a new fuel regulator and other misc attempts to eliminate the vibration have all been unsuccessful. My guess is that this condition is not unusual and that either there's a fix out there somewhere, or owners just give up and get used to it. I'll post the result of the bushing replacement either way. Thanks!!