Motor Trend reviews the 2010 Roush Mustang 427R. The Roush Mustang features 435 horsepower, this amounts to 0-60mph time in 4.7 seconds. The 1/4 mile comes in at 13.1 seconds at 108.8mph. Overall the Mustang is not bad, but I expected better times in the 1/4 mile. It must be because the Roush Mustang is so heavy.