Why is it so hard to find a 2007 S550 with ABC. I have been looking for the last three months and all I can find is air-matic version. I wanted the S600 but the expense is just to much. I Drove an S600 and feel in love with the ABC suspension, but wish to go with a V8. Will I need to buy the S600. Also wish to know are turbo a good add-on.
thanks
thanks