A tandem drive axle fleet tractor, with a flat roof and 81 inch cab. Probably the most common configuration for the older friehgtliner cab-overs. I used to hate working on these, because of the aluminum cab, when they began to get old there was so much corrosion and electrolysis that you never knew if you would be able to jack the cab up without breaking something, and once it was up, if you could get it back down and locked. Really true of all cabovers, but these were the worst, because there were so many. Scripted to switch between 15 skins, many of them railroad.