While there’s no denying the performance benefits that came with the later S197 Mustangs, the tried-and-true 4.0 liter V6 and 4.6 liter V8 engines definitely have a loyal fanbase. That’s with good reason, too. These cars are easy to customize and enhance. The Mustang GT’s 3-valve modular V8, especially, has lots of performance potential in an extremely reliable platform.
This guide is here to serve as a jumping-off point, giving you an overview and some inspiration when it comes to the next mod to add to your 2005-2010 Mustang. Whether you’re just getting started or are well into your S197 build, there’s something here for every enthusiast.
2005-2010 Mustang Exhaust Mods
For us, an exhaust upgrade would be one of the first things we’d add to an otherwise stock S197. Especially for owners of the V8 GT, there’s a lot to be gained in terms of sound and performance, at a price that won’t break the bank.
And if you’ve got a V6 Mustang, you can even upgrade to a dual exhaust set-up, giving you enhanced power and sound, plus a completely new look.
Check out our full 2005-2010 Mustang exhaust guide for a detailed breakdown or if you need some help figuring out where to start. From cat-back exhaust kits to headers to mid-pipes, there’s something out there for every S197.
2005-2010 Mustang Exterior and Body Mods
Whether you want to take inspiration from the Bullitt, GT500, or go your own route, you can find some high-quality body components that will give you a new look. From full body kits to hoods to wheels, you can find hundreds of great ways to optimize the street presence of your 2005-2010 Mustang. The retro-futuristic style is a nice blend of old and new, giving you a lot of freedom in terms of the stylistic direction that you want to go. Even something as simple as adding a new grille can completely change the overall look of your car.
We also like the idea of adding headlights to modernize the older S197s; they can get pretty dim over time (and weren’t very bright to begin with), so an aftermarket pair can really add both safety and style.
The opportunities here are endless, giving you the opportunity to treat your Mustang as a blank canvas.
2005-2010 Mustang Engine Upgrade Mods
In addition to adding a performance exhaust kit, there are a ton of ways to increase your power levels under the hood. From something a simple as a cold air intake and tune combination to the unmatched horsepower and torque gains offered by a supercharger, it’s up to the driver to decide how far they want to go.
With an affordable and reliable foundation, your S197 has a lot of untapped potential when it comes to engine mods. Whether you’ve got the GT or V6, a plug-and-play tune is one of the easiest ways to get the performance you’ve dreamed of. A supercharger is a much more complex install but can give you performance levels that are ideal for the drag strip or race track.
2005-2010 Mustang Interior Mods and Accessories
The clutch pedal feel is arguably one of the least enjoyable driving elements of the 2005-2010 Mustang. Heavy in weight and not especially linear in engagement, it can be a chore to operate, especially for shorter drivers (or those who just completed leg day at the gym!). As a solution to help remedy this, our Accelatec Clutch Pedal Extension (seen below) is an ultra-affordable upgrade that can make a huge difference in your everyday driving.
Beyond that, there are hundreds of ways that you can keep your cabin protected, add some style, or find ways to increase practicality. Seat covers and floor mats might be a necessity depending on what type of climate you live in. And something as simple as a custom shift knob can really enhance the overall look of your interior.
Don’t forget to keep things fresh and clean by grabbing a new cabin air filter as well! If you’ve gone more than a year or two without replacing it, it’s almost certainly time to do so.
From top to bottom, inside and out, the aftermarket offers many ways to customize your S197 Mustang. Start here to find everything on your wishlist, and maybe some things that weren't.