2003 chevy 2500HD LS, extra cab, 4 dr, long bed, 4x4, 8.1L (496 ci.), Allison auto. We added dual red top Optimas, KnN filter, Firestone HD air bags, Hellwig HD rear sway bar. Genuine Micky Thompson Classic wheels and 305 All Terrain, load range E tires. The truck is a retired NASCAR track/safety truck from California Speedway. We purchased it in 2005 with 1451 miles on the odometer. The first version we had a Lance cab over camper and flatbed to haul our toy's. Second (current version) is a Bulldog quad rack in the bed and towing our 24ft Prowler travel trailer. Current odometer reading, 14,775 miles.