1969 Porsche 917 PA Spyder: Flat-12 powered but sounding like a Flat-6

This is how the famous Porsche 917’s flat-12 sounds like when you have a quad exhaust system instead of the usual “double-exit“ one. Yes, yes: “Hellou, Captain Obvious!“... but it was kinda weird to hear it in person, thinking an old school 911 was coming towards you. The curious 917 in this video was built by Porsche to satisfy Group 7 specifications in order to race in the popular Can-Am racing series. Only two of them were built in 1969 and only one (chassis , the one you see in this video) was a