2004 dodge 1500 hemi

This truck has been good to me over the years for running around town pulling a horse Trialer an occasional trips out of town it was not a daily driver for me. I Have done regular oil changes every 3,000 miles. Changed a lot of sensors and did manifold gaskets. I put the tires and rims on brand knew they have about 5,000 miles on them! This truck recently starting have a misfire and I can’t get it figured out. truck does run and drive but runs a little rough. It Does have check engine light on for o2 sensor that’s doesn’t go away. A/C and heater both work great and rides very comfortably interior is in good shape to tears in seats. But Does need work or someone who can fix it. 2,000 obo