The Peterbilt 379X is a Limited Edition version of peterbilts legendary 379. The Peterbilt 379X was only in production from 2004-2006 with an estimite of only 2000 units produced and was geared towards owner operaters. Special Edition 379X only came in solid colors with chrome accents which included chrome front fenders and silver trimed dashboard. This 379X model was only offered with a caterpillar engine mated to a 18 speed transmission. The Standard 379X special Edition rolled off dealer lots with a 550 horsepower power plant, but with a special request owner operaters would bump the power up. The 379X was only available with a 70 inch unibilt sleeper ultra cab and was not offered in a tri-axle ,lift axle configuration.Any Lift axle configurations seen on the 379x was retro fitted by a private shop. All units produced as a 379X came with the extended hood which was bbc 127 inches. The regular 379 models came standard with bbc 119 inch hoods. - Standalone; - Dealer Peterbilt; - Cable support; - 1 cabin; - 3 types of chassis; - 5 engines; - 6 transmissions; - 1 interior option; - Tuning; - Support Sisl's Mega Pack; - Support for DLC "Steering Creations Pack". Changes v23.11.19: - Adjusted truck model interior; - Fixed interior view mirrors freezing; - Adjust fifth wheel for trailer king pin location; - Rear light flares for turn signal correction (red blinkers ); - Fixed fifth wheel trailer king pin height for lift axle options Truck Model: "5150". Original Authors: Josh farley (REDNEK),PsyOdinAde Customs,Quattrophobia,bansheewoj. Current Authors: Thomas Parham,Chief86, viper2, Moreso D3DDESIGNS. Engine sounds and engines: Krichbaum. Base stock engine cat 550 sound: Charles Bock.