Jim, yeah I wondered that too and a lot of times more cam will help a lower compression motor "hang-on" longer, you'll notice the HP doesn't keep gaining dramatically above the torque peak but does a real good job of hanging on to the torque which is an awesome build for the way Ron's gonna drive it. What you don't want (i.e., a textbook Under-cammed stroker) is the torque to peak early and then start dropping and hammering down the power curve which happens even faster as the cubes go up.

I've always found the better the heads you can be a little conservative with the cam and the motor will still make really good upstairs power....by conservative I mean how much bottom end/lower middle are you realistically willing to live without....it depends on your definition of Streetable.

The torque is massive and wall to wall and realistically in a 4100 pounder and a very long 4.50" stroke (already hitting 4000 ft/min at only 5300) you don't need to put all the power way upstairs, with good heads and induction the motor can hang comfortably up high without much noticable VE drop or slowing of the RPM...it's also a nice safety cushion...you know you "OUGHT" to be shifting sometime soon without worrying about the tach climbing too high or the motor laying down, like wise it's not as critical that you hit precisely the right shift point for the car to ET, you're more concerned about the hook.

What's more impressive is that was a 4150, and 700 with an 850 is going to be super responsive.
I agree a dominator would likely raise the torque peak (less pressure drop) but for 90% of street driving I don't know if it'd be worth the extra gas...like I said cup cars make 830+ hp and they're limited to a 4150 base carb