I remember talking to Dick from Firm Feel a few years back @ one of the flings.He didn't think that there was much benefit in going poly on the LCA bushing, as they are not very thick, so there isn't much room to deflect. We were talking about street cars not dedicated race cars. I'm still leaning towards buying the greaseable LCA pins and nylon bushings for my car, since it's a toy, not a daily driver and I've got Bill Reilly's heim jointed strut rods, and will get the matching UCAs .