1967 Barracuda 383 tuning tips

Thank you AJ for a very interesting read!! Sure is a lot to take in.

I just read an old Hot Rod article of them going from the stock 330 hp 383 B engine to 454.9 hp at 6,000 rpm, and 456.6 lb-ft of torque at 4,800 rpm with just a carb, intake, headers and cam swap. That means running that power on stock heads. Could this really be true?