With a 6.0-liter V-12 from the factory, the 1998 Mercedes SL600 already came with ... the engine to an obnoxious 7.4 liters, creating the SL74. Welcome to You Must Buy, our daily look at the ...

See Also: The Renntech SL74 Is One Of The Wildest Mercedes R129s Ever Made Visually, the Black Series was already a thing to behold, with motorsport-derived aero components all around the bodywork.

RENNtech Builds AMG GT Black Series With 1066 HP The RENNtech SL74 Is Germany's Wildest Muscle Car Renntech 592-HP Tune for Mercedes-AMG A45 Revealed RENNtech is a Florida-based tuner that ...

Feyhl, formerly of super-tuner AMG in Germany and now owner of Florida-based RENNTech Performance Tuning, raises the modification of Mercedes-Benzes to a high art form. His cars are blindingly ...