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Ford Mustang - 2015-Present

To mark the 50th anniversary of the original Pony Car, Ford Motor Company debuted the S550 Mustang. Packing a wide range of powerplants including the Ecoboost 2.3L, Coyote 5.0L, and Supercharged Voodoo 5.2L and the latest and greatest from FoMoCo in the chassis and suspension department, the S550 Mustang is one of the best pony cars of all-time. If you're ready to take your Mustang to the next level, we can help separate you from the herd.

Proven Packages

Holley's engineering team has come together to do all of the legwork for you to put together Proven Packages. These packages consist of hand-selected parts that are designed to work together to give your late model hot rod more power while keeping your budget in mind. Proven Packages are available in levels 1, 2, and 3 so you can choose how much power you need, how much money you want to spend, and we deliver the goods.


We didn't simply put parts together on paper that should work well. All of these packages have been tested on our in-house chassis dyno and at Beech Bend Raceway so that they're more than just a part number. They're Proven Packages that have dyno-verified gains and track-verified results.

Level 1

2015-2017

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .27 seconds
  • 1/4 mile MPH improves by .8 MPH
  • Max under the curve gains of 18 HP and 21 lb/ft of torque
  • Peak HP improves by 15 HP
  • Peak Torque improves by 18 lb.ft.
View Holley Proven Packages™ - Level 1 for 2015-2017 Ford Mustang, 5.0L Engine

2018-Present

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .27 seconds
  • 1/4 mile MPH improves by .8 MPH
  • Max under the curve gains of 18 HP and 21 lb/ft of torque
  • Peak HP improves by 15 HP
  • Peak Torque improves by 18 lb.ft.
View Holley Proven Packages™ - Level 1 for 2018-2020 Ford Mustang, 5.0L Engine

2018-Present (w/ Active Exhaust)

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .27 seconds
  • 1/4 mile MPH improves by .8 MPH
  • Max under the curve gains of 18 HP and 21 lb/ft of torque
  • Peak HP improves by 15 HP
  • Peak Torque improves by 18 lb.ft.
View Holley Proven Packages™ - Level 1 for 2018-2020 Ford Mustang, 5.0L Engine and Active Exhaust

Level 2

2015-2017

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .55 seconds
  • 1/4 mile MPH improves by 1.5 MPH
  • Max HP improves by 26 HP
  • Max Torque improves by 27 lb/ft
View Holley Proven Packages™ - Level 2 for 2015-2017 Ford Mustang w/ 5.0L Engine

2018-2020

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .55 seconds
  • 1/4 mile MPH improves by 1.5 MPH
  • Max under the curve gains of 30 HP and 36 lb/ft of torque
  • Peak HP improves by 26 HP
  • Peak Torque improves by 27 lb.ft.
View Holley Proven Packages™ - Level 2 for 2018-2020 Ford Mustang w/ 5.0L Engine

2018-Present (w/ Active Exhaust)

  • Track tested performance gains
  • True bolt-on performance that you can install at home
  • 1/4 mile ET improves by .55 seconds
  • 1/4 mile MPH improves by 1.5 MPH
  • Max under the curve gains of 30 HP and 36 lb/ft of torque
  • Peak HP improves by 26 HP
  • Peak Torque improves by 27 lb.ft.
View Holley Proven Packages™ - Level 2 for 2018-2020 Ford Mustang w/ 5.0L Engine with Active Exhaust

Proven Package Dyno Results

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2020 Shelby GT500: We Test The Fastest Mustang Built Yet

Since 1964, the Mustang has symbolized a lot of things for a lot of people. Arguably, it is the most iconic car in American history and Ford has refined and upgraded it continuously during its lifetime to the point where this pony is able to compete with some of the premier sports cars the world has to offer. For 2020, Ford has upped the ante again with the 760 horsepower GT500. Click here to get the full scoop!
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