7.3 powerstroke excursion limited 4x4 with 369,500 miles. Heat and a/c work great. Had been my daily driver up until I got a different vehicle.
Needs leaf springs replaced before long the bushings are worn out, and new shocks . Has a transmission with 120,000 and is not a stock trans. Has a 6.0 trans cooler conversion to keep the trans cool as I towed regularly with this excursion.
Drove it to West Virginia last year and i am not scared to take it on long trips.
Does have a 6 position tuner and has had since I bought it. It really helps