Very nice tractor with lots of updates. Detroit Diesel Series 60/455 HP and 13 speed transmission. Air ride suspension. APU was completely rebuilt with new power board 5 months ago ($1,004.41). Transmission rebuilt June 2012 ($2,903.23). New turbo installed two months ago ($2,586.45). All new injectors, air compressor,and jake brake harness installed 3 months ago ($4,606.42) New EGR valve assembly in May 2012 ($1,617.26). Ten new virgin tires. New brakes, etc. I have records for everything listed and more.