4WD Reg Cab W/ SERVICE BED and LIFTGATE 3.73 axle ratio Manual transfer case & hubs 155-amp HD alternator 7-wire trailer tow harness w/relays, blunt cut & labeled Mono-beam front axle w/coil spring suspension Rear auxiliary springs HD gas shock absorbers Front/rear stabilizer bars (40) gallon aft-axle fuel tank Payload upgrade pkg -inc: increased GVWR to 13,300 lbs for increased payload range ---