6.7 diesel 4x4 with roughly 363,000 miles.Has low compression on cylinder number 4. Not sure what the problem is so I decided to buy a newer truck. Rebuilt rearend (gears, seals and bearings) in summer of 23. Front end rebuilt in summer of 2024. I can answer any other questions you may have. Please email me and we can go from there. Truck is located in Oshkosh.