The Mission 400 Plus is the result of the three companies work: H&R, RS Tuning and Jürgen Alzen Motorsport. The engine of the car is based on that of the latest 997-series Porsche 911 Turbo, and comes from RS Tuning. The engine is built by RS Tuning in Kirchhaslach, where the racing engines for Jürgen Alzen Motorsport have been created for many years. The displacement of the six-cylinder flat engine is increased from 3.6 to 3.8 liters and the engine is reworked entirely.

The car has an output of 1054 hp at 7700 rpm and a peak torque of 759 lbs-ft at 5800 rpm.