Thanks AH64ID - 10% increase in front brake size doesn't hurt. I don't know if any federal braking standards changed between 2006 model and 2010? If little trucks are the same as class 8 then the brakes in your example will be designed for the 14K GVWR and offer extra capacity on the 12,300 GVWR vehicle.
I've never scared myself driving a heavy truck uphill. On a couple occasions the butterflies occurred during braking situations.
I guess the HP and torque and "tow rating" and racing up grades B.S. is what sells little trucks. I can't recall ever hearing a driver climb out of the cab of a class 8 and say. "I like that rig except it has way too much brakes..."
