dont see much point fitting a ZS beam, every boday raves about them but ive not had any problems with my rs even and ive chucked it into some bends i can tell ya , its norm the front under steering that presents a problem.

in all fairness, rear disc is for looks, it doesnt improve the rear brakes at all, and ive still got my rear disc on

still, theres many ways of doing it, the rs2k rear set up is another way and prob a better way th as it has drum(inside or disc) as hand brake and the disc for braking