Did a bushing deflection test on the Progress spherical bearing lower control arm conversion vs. urethane. Here's the pics. These things are awesome...
Have a F Production Civic, but tune alot of IT cars. Progress has some bitchin' spherical bearing assemblies for 2nd gen Civic/CRX lower control arms, front and rear. IT legal, and they use teflon lined bearings. Definitely better than the urethane bushings I had. The fast guys on the west coast...