I finally got the 08 shock put on. It is better than my 20,000 mile stocker. I bought the 08 shock off a parted out 08 wreck for 25.00. Not much to lose for a possible better ride. My first impression is positive. Rode about 30 miles over a variety of road types , from smooth interstate to bumpy curvy backroads. I used the settings published in Sportrider magazine from the BMW comparo. The 08 seems to have better valving than the 04 but this just may be that it has fewer miles on it. I am doing Racetech 1.00 springs with gold valves later this week. Will report back with my findings. Overall a worthwhile upgrade I believe. I will most likely put a Penske shock on over the winter to complete my suspension upgrade. The 08 shock will be fine tuned over the next couple outings.