The Kansas City location is home to Custom Truck One Source World Headquarters, which sits on the historic Armco Steel Plant's southwest corner. Custom Truck has been working to revitalize this iconic site since its inception in 1996. With over 500 employees and 75+ acres and still growing, the Headquarters includes a brand new 119,035 sq. ft. production facility for manufacturing and houses Custom Truck's Railroad division. You'll also find a walk-in retail parts room where we stock thousands of different parts or order you any part you may need. See below for a list of the various buildings within our headquarters to help you navigate our campus.