I disagree with this vehemently, because the toe change under heavy acceleration/deceleration is extreme and comes 90% from the forward RLCA pivot point. On PP cars, the aft pivot is already a spherical, so only the big one needs to be done. Going from a lot of toe change to almost none makes the car much more predictable on/off throttle in the corners in my experience. This is a PITA mod that I wish I had done much sooner.LRCA bearings are an odd choice cor a street car when you can get most of the results from bolt on braces and smaller more outboard parts replacements which require less labor. Spherical bearings also don’t last forever.
I only did mine because I had torn through the rubber on a stock bushing so at least one had to go anyway. The bearings have nocticeable less wheel hop than a torn rubber bushing of the same size .