: Many 379X units were spec'd with heavy-hitting engines of the era, such as the Caterpillar C15 Accert .
: Enthusiasts often use these frames for massive frame stretches , reaching wheelbases of over 330 inches for a truly "stretched" custom appearance. Collecting and Customizing : Many 379X units were spec'd with heavy-hitting
While the "X" primarily denoted a styling package, it was built on the legendary 379 chassis, known for its durability and ease of customization. Today, the 379X is a highly coveted collector’s
Today, the 379X is a highly coveted collector’s item in the trucking world. Because it was the "last of its kind" style-wise, clean units command high prices at auctions and truck shows like MATS . Owners often continue to upgrade them with custom interior work and specialized lighting to keep the "X" spirit alive. Performance and Customization
: Features included a polished aluminum grille, chrome-plated bumper, and stainless steel sun visor.
Inside, the 379X was just as distinct. Peterbilt marketed it with a "rugged but refined" aesthetic:
: Each unit came with specialized 379X badging, marking its place in the limited production run. Performance and Customization