Thrift and thunderous muscle car action meet in AmericanMuscle's More Power Per Dollar collection for 2005-2009 Mustangs. The concept is simple – the less you pay for each horsepower or ft-lb of torque, the more power you can add through superchargers, exhaust systems, headers, tuners, and so on with a given budget. This collection brings together all your best choices for hard-hitting upgrades that you'll feel every time you step on the gas pedal: flash tuners with custom tunes and free lifetime tune updates, adding 17 horse and 19 ft-lbs at a minimum on GT models with a “power tune;” ceramic long tube headers that cut down on the weight resting on the front axle, boosting RWHP by 14 to 22; lowering springs and control arms for crisp, high-speed handling; 4.10:1 CNC-cut 8620 gear steel gears for an eyeball-popping launch; and a ton of other affordable power boosts that work great in 2005-2009 Ponies.