I run 8.4's at 82mph now all N/A with my current combo. I am sure I could cut better if I had slicks but anyways I am looking at the Edelbrock Plate kit because I have heard good things and I am running the Performer EFI intake and it would double as a spacer to keep some heat off the upper. The kit is adjustable from 150-300 shot, I would probally run between 150-200max. What kind of difference would this system make???