This 3.6-liter M64/23 flat-six engine, originally built for a 1996 Porsche 911 Carrera, received a top-end rebuild in 2013 by European Performance Engineering. It was previously used in a part-time track car and has been rotated every three months since its acquisition in 2015, showing excellent 0-5% cylinder leak-down results. The sale includes the secondary air system, exhaust heat exchangers, and muffler, though the ECU is not part of the offering.