Specifically, the EcoBoost Mustang power package gives the four-cylinder 25 more peak horsepower and a whopping 70 more lb-ft peak of torque. That brings numbers up to 335 hp and 390 lb-ft. You might notice that the torque number is just 10 lb-ft away from the stock Mustang GT.
While those are the peak figures, there's other nice gains throughout the band, including as high as 100 more hp at 6,000 rpm. All of this could be yours for the price of $699. And if the package is installed by a Ford Performance-authorized dealer, you'll still be covered by either the factory or Ford Performance warranty. It's even legal in all 50 states, so if you have emissions testing, you're good to go.