yes there is a kit but its gonna cost one 'ell of a pretty penny"
Check out www.Streetkiaz.com I am not sure if its listed in Kfxperformance.com or not. I believe there is a kit, i could be wrong though.
I don't think your gonna need the extra braking power much since over 70% of the braking is done with the front disk brakes. but your welcome to upgrade.