I'm fighting rear end locking issues and can attest that, unless you are carrying a load to actually put weight on the back, increasing stopping power to the rear end will only lead to locking it up at the most unfortunate of times. There just isn't enough weight on the rear tires once heavy braking occurs to work with.

1995 Toyota T100, Rhino Liner, SwayAway Torsion Bars, Bilestien Shocks, Brembo Rotors, Akebono Pads, SS Brakelines, Monroe Steering Stabilizer & TRD/Eaton LSD