Today I finished what turned into a three day project. New inner and outer tie rods, steering rack bushings, and O2 sensor installed. The truck feels much more stable when I hit bumps or potholes now. The O2 sensor nuts were pretty rusted and I called around today to try to find new ones, but there was only one nut in the entire metroplex. I went ahead and reinstalled the old ones and despite using the closed end of a combination wrench, I rounded one of them off when it was going back on. Hope I won't have to change that sensor again... My CEL has been fixed though, so that's nice.