Highest flowing sbm heads?

You tell me what it takes to move 4200 lbs with wheel spin - easing it out of the hole and terrible 60 ft times and still run a 12 flat box stock from the factory? It's not up to me to spell it out for ya, your much smarter than that (I assume). Would 112 mph be enough? Or do you want 115 ?? LOL.

Well which was it? 112 or 115? Make up your mind.