Earlier this year Mukka Motorsport attended Rotary REunion with their wild Mazda RX-7 built by Humphries Steel & Performance in Palmerston North, New Zealand. What sets their RX-7 apart from every other one on Earth is the power plant. Sitting between the front chassis rails is a naturally aspirated six-rotor built by Pulse Performance Race Engines (PPRE). PPRE lists these engines on their website for $117,800. Behind the motor is a HGT Precision six-speed sequential transmission and Winters quick-change rear end. Listen to the unique engine in the video below.