Originally Posted by Def

Why would you want to start jacking around with the rear roll center(which is not as much of an issue as the front) and not want to go to spherical bearings in the rear?

Let me put it this way, the benefit from spherical bearings in the rear is HUGE. The rear roll center isn't a huge problem unless you start getting REALLY low, which at that point your front roll center is probably hanging out around the center of the earth. Just chillin' with a 748.3 mile long roll couple.

Just letting the rear suspension actually work and articulate by putting proper bearings in the spindle is a HUGE improvement. It's step 1 to take on getting a suspension that actually works well. Tweaking the stock geometry is secondary.