Unported head quickness?

I had Mopar Performance remanufactured 360 short block using box stock Edelbrock heads.

3800 pound race weight, pump gas, 3.55 spool, 275/60/15 BFG Radial tires.
10.6@128











I had a "little" help from 6psi of boost and a 150shot of N20.:D