"Class 8 Rig" You Sir sure do know your trucks! Take a peek at Truckpaper maybe you'll find something you can use there.
http://www.truckpaper.com/drilldown/manufacturers.aspx?ETID=1&catid=214&bcatid=27
http://www.truckpaper.com/drilldown/manufacturers.aspx?ETID=1&catid=214&bcatid=27