It has a 525 horsepower Cummins engine with a 13-speed transmission. The Cummins engine was overhauled at 852,716 miles with receipts and all American made parts, we also changed the Turbo and EGR Cooler. Truck Idles at 35 oil pressure, and at 1400 RPM it Idles at 41 oil pressure. All gearbox oils have been flushed and replaced. This truck has perfect owner operator specs, built in cobra inverter and also a fridge. Truck will come with a Galaxy CB ($220.00), Original Concert Class Radio, and a Remote Switch for the inverter in the sleeper. The truck also comes equipped with a right weight load scale device ($200.00), so you can tell if you’re overweight on your drive axles. It also has a Filta-kleen oil system ($800.00), that"s a secondary oil filter that cleans your oil, it extends your oil life and protects your engine. It has a mounted Chain hanger and LOTS OF CHROME GOODIES. Just serviced the truck and completed a DOT inspection on it. Truck just recently had a laser alignment done as well. Truck will be detailed inside before keys are handed over. Honestly, I don"t think there is anything else you can do to it besides getting a mattress. This truck will last a long time and definitely make you money. With all the money spent on this truck, you will not have any expenses besides your routine oil service.