Stock control arms are marginal at best. Bushing deflection combined with control arm flex creates erratic handling and inconsistent rear end stability when subjected to the added loads of performance driving. BMR double adjustable control arms are TIG welded and utilize Teflon lined, XR series rod ends by QA1.
BMR's CNC machined adjusters are made from 4130 chromoly and have rolled threads. All rod end spacers are 304 stainless. You won't find better quality components.
*To retain the factory geometry, ensure the offset end of the LCA is installed on the axle side, with the offset portion of the bushing facing towards the rear differential.