Not the braking I want

Understood,but the point is the relationship of frt. piston dia. to the
rear brakes,which are not a new setup. Smaller rotors than mopar
teamed up w/those rears are already at a disadvantage,let alone the
teeny caliper pistons,it would take a small MC bore w/extra travel to
apply the same force to the rotors OE's would've. To come up w/the
desired frt./rear balance, something's got to change,or add an adj.
proportioning valve to the rear line.
In no way would I put drilled/slotted nonsense on your truck unless
you simply like the appearance, you're actually decreasing the friction
surface w/that stuff. Better pads as suggested are a smarter move.