RK319-43 carried Colin Braun to his first Truck Series win at Michigan International Speedway on June 13, 2009, in the No. 6 Conway Freight truck. Its earlier race history includes victories with Mark Martin at California Speedway in 2006 and Travis Kvapil at Michigan in 2007, with Braun's 2009 win also marking Roush Fenway Racing's 50th and final Truck Series victory. The truck uses a Roush Yates 358 CI Ford V-8, 4-speed manual transmission, Brembo four-wheel disc brakes, and race safety equipment including a roll cage and fire suppression system.