Ok, today was complete check out day. serviced the transmission, new wires plugs, dist cap and rotor. oil and filter, fuel filter, replaced the air intake hose ( old was made of duct tape). transmission and transfer has no leaks, changed diff oil, engine has small leak rear main seal I think. gas on the AC and is freaking cold now. I believe o2 sensor needs to be replace, at least is giving me that code. After all this drove it and I can feel the difference.
haven't clean the interior yet, but I took out 3rd row seat and seatbelts, tight front seats (were loose and driver was missing a bolt), secure center console that was loose. lower rear tailgate was also loose, not any more.
hopefully, tomorrow I'll clean the interior so I can take it home during the weekend to see what else might need to check.