... But the even-bigger picture is that NONE of this makes any sense at all, breathing thru 273 logs and a single exhaust. If your engine has to pump it's own exhaust out, that costs power. And gas money
If you bothered read, he is building a nice driver for his wife, AC and all. A 1967 Barracuda convertible with a Commando drive train. He already has a new Commando exhaust from Accurate. I doubt you loose much hp from the 273 manifolds and exhaust. I ran that exhaust for years and later switched to duals, to gain nothing. Mine was the 65 Commando set up with a 2.5 inlet, straight thru muffler. Should be a blast to drive, and get great gas mileage. Not everyone is a boy racer.
