From their website:
We at Worthen Equipment, Inc. have been in business since 1984. Our company is comprised of two divisions. One division is an Allison Transmission Factory Authorized Overhaul and Maintenance Dealer. The second division specializes in selling, installing and servicing truck mounted equipment.
We are a factory authorized overhaul and maintenance dealer for Allision Transmissions and a rebuilder for Clark and Funk transmissions. Our customer base includes cities, counties, school districts, utilities, trucking, agriculture, refuse, construction and the mining companies. This division employs fourteen people with over 280 years of combined service and sales experience with automatic transmissions, mechanical repairs, servicing medium and heavy duty equipment throughout the industry. Our technicians have many certifications through various trade schools and the Allison E-Learn system keeping up to date on all new products.