Workhorse Custom Chassis Company Profile | Visit Website Umion City, IN Phone:877-294-6773 Products PTO-equipped Walk-in Chassis Company Product Walk-in trucks built on the heavy-duty W62 diesel chassis (19,500- to 23,500-lb. GVWR) are now available with a PTO that can drive a multitude of products. Can be spec’d with the chassis right... Product • March 26th, 2008 A subsidiary of Navistar International Corp. Want to know more about this company? Click here to request more information about Workhorse Custom Chassis .