I'm curious about the quality of roads in your area. I recently changed the (original) LCAs on my '05 at 140K, but none of the bushings or ball joints were actually shot. I basically did the job on mine just to make sure I could do the LCAs on my daughter's '06 in a limited amount of time and far from where I live. The roads (one in particular) in her region are much worse than in mine, and the rear LCA bushings on her '06 were badly worn. But it sounds like the factory bushings in your '05 wore out even faster than hers did, so I'm wondering just how bad your roads are (or if maybe you go off-roading).