Here are two favorable reviews of the full bushing swap.
Pedders to the rescue - LX Forums Modern Mopar Muscle
Full Pedders Bushing install review - LX Forums Modern Mopar Muscle
There are many different levels to the Pedders installs. From just bushings, to coilovers and sway bars.
I just had the Bump Steer Correction Kit installed and I can't say I noticed any change. I never felt I had a bump steer problem, but I installed the kit hoping for some kind of change/improvement. Unfortunately I didn't notice any.