Roush Performance produces tuned Ford Mustangs available online through officially licensed Ford dealers, on its official website, and at used car buying and auction websites such as eBay Motors. Roush Mustang models come officially sanctioned by Ford and offer a factory Ford warranty.
Roush Performance serves as one of Ford's official tuning partners. Not all new Ford dealers stock Roush Mustangs, though those that do make their selections available online and can be searched by location via a portal at Ford's official website. The performance company also lists and sells some Mustang cars on its own official website.
New Roush models come available in a variety of tuning "stages" ranging from modest visual and performance upgrades over stock to supercar-level Mustangs made for drag and circuit racing. Stage 1 models are designed to be driven on the street, while Stage 2 cars offer extreme street-legal performance also designed for racing applications. Moving up to Stage 3 brings engines in excess of 600 horsepower as of 2015. Roush also offers crate engines online for Mustang models through an official partnership with Ford Racing as well as a large catalog of other performance upgrades and visual accessories.
Buyers seeking a cheaper alternative can purchase used Roush-tuned Mustangs online through used car listing websites such as AutoTrader.com and Craigslist as well as at auction through eBay Motors. Used models, especially older cars, have the disadvantage of lacking the comprehensive Ford warranty that can be found on a new Roush Mustang.