Putting an expensive blower setup on a motor that is not built for it may not be the most cost effective plan.

Are you already getting detonation now?

Have you considered using a programable electronic ignition controller and a small NOS system that also injects race gas from an auxillary tank? Even this could have reliablity/tuning issues.

Remember, speed cost money. How fast do you want to go?

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)