A customer put SSBC on his Charger, the car doesn't stop with two feet on the pedal! Another friend has them, similar issue. Do Not Use! Incidentally, the systems had had extensive hours invested to figure out why, master sizing, master replaced anyhow, new lines, prop valve, pressure tested at wheels etc, Put Wilwood kits on and stops very well.
* I do not buy 4 piston stuff for front, pads are way too small for a street or road race car - IMHO

I recently had to call Wilwood about incorrect packaged parts, they were very helpful and fixed issue right away.