http://www.hughesengines.com/TechArticles/3dynotest684hp500cid6pack4bbljcross012007.php

I have since sent the intake back to them, and the took it as far as they are able ato at this point. I did make other changes to the motor but have not dyno'd it again for a comparison.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)