Bushings suck, monoballs/rod ends rule.........
Problem with most urethane busings if if they see REALLY hard use, they chance permanently deforming and end up worse than the oem rubber bushings. I don't like using them in suspension arms and stuff. Subframes and drivetrain mounts seems ok, but suspension arms bushing tend to deform easily with track use. Rod ends beat bushings in every aspect except for noise control, but that can be taken care of with dampened rod ends
Not to mention people put these in their cars and end up with a car that handles WORSE on the track(or road for that matter) and wonder why. Due to the fact that they didn't accompany the upgrade with a better suspension and/or tires to maintain tire grip after the suspension has been tightened up. Most OEM manufactures factor in bushing flex as a component in the cars' grip when designing the suspension
