Rear 2g brakes

[dogwhistle]

So I am pretty set on going with RTM racing's VR4 brake upgrade for the front using 13" rotors and such. I will also hopefully be triming my fenders and running 17x9 wheels with a 25 or so offset with some flares to keep stuff covered. My question in, can I keep the proportion of braking on the rear brakes by moving my AWD front calipers and rotors, to the rear or is that not possible? I realize some people use VR4 single piston rears as they are larger too and can keep an emergency brake. They seem hard to find though.