It seems the ACSchnitzer ACS5 SPORT (Their top of the range e39) Runs exactly the same 0-60 times and has exactly the same torque output as the M5. But in MHO looks much better.
Follow this link
to an ACSchnitzer pdf which shows the diferences between their cars and the the BMW originals - The 3.0 diesel may surprise a few people, and that's exactly the car I want next.
To see some awesome looking AC SChnitzer BMW's just go here
to their site.