Late Model Restoration is your #1 source for 2015-2020 Mustang power packs! These power packs will provide you an all in one kit with performance parts to boost the performance of your S550. These parts range from a simple air filter and computer calibration all the way to complete kits with intake manifolds, throttle bodies, and exhaust. Choose from great brands such as Ford Performance, Roush, and Cobb for peace of mind that you're installing high quality parts on your S550. Our power pack kits are available in Stage 1, 2, and 3 levels for Mustang 5.0 and Ecoboost engines. Shop our selection of 2015-2020 Mustang power packs below!