I know it's slightly heretical, but I am interested if anyone has had an under-car exhaust fabricated for his 427 bodied replica, and if so, what mufflers were used to retain a suitable sound character, yet allow long distance cruising without hearing loss? I'd be installing this on my Backdraft Cobra, BTW. Bob
I don't have rear exit exhaust but with the side pipes I have it isn't the sound from the engine that is a problem. It is the wind noise on long trips.