Used Mustangs modified by Jack Roush's Roush Performance company are often sold by owners through private sales or auction websites, as well as through authorized dealers of Roush-modified Mustangs. These dealers may also carry other used Roush vehicles such as the Roush RT570 F-150 or off-road Raptor trucks.
Roush Mustangs are sold in various levels of modification referred to as stages. Mustangs with lower stage numbers are often primarily modified with cosmetic rather than performance features. Roush also sells Mustangs that are rebadged with Roush-specific names such as the 2009 Roush 429 Mustang. These renamed cars are often the most heavily modified vehicles and are often produced in very limited quantities.