4 of 6
Carlsson R230
If your basic Mercedes-Benz SL63 AMG just isn't enough, Mercedes tuner Carlsson can add an extra 50 horsepower -- taking it up to 580 -- give the car a mean matte black finish and add a few exterior and interior design tweaks, too.
Carlsson also makes a version of the SL that puts out 750 horsepower. For that kind of power, prices can exceed $700,000.
- Last updated March 20 2013 06:13 AM ET
