Yes, a 'period' engine, not a period-correct engine. Period-correct is something built today to simulate what was built - in the case of early 911s - in the 1970's. The engine in the Graywolf is a survivor hotrod engine built at legendary Stoddard Porsche in the 70's utilizing factory Mahle Carrera RS pistons & cylinders and real Weber 40IDA 3-barrel carbs - no resto-mod PMOs here! Stoddard was the go-to shop in the midwest/eastcoast back then. So here we are some 35 years and many miles later and my engine is running stronger than ever. It never ceases to amaze.