An axle-back exhaust kit will replace everything from the rear axle back. While they don't offer the performance benefits of a cat-back, axle-backs act as a happy medium between a cat-back and your stock exhaust. You'll get a better sound and more volume, at a fraction of the cost of a cat-back.

For many Mustang owners, improving the sound of their rides is a top priority. Adding an axle-back exhaust is an easy way to improve both tone and volume to achieve that deep rumble that everyone loves.

However, it's important to be aware of your state's laws and regulations on how loud your Mustang can be. Certain states like California have strict decibel limits that you're not allowed to be over. Check for 50-state legal exhaust kits.

Adding a cold air intake is another great way to change the sound of your ride. A new intake will create a louder, more intense whooshing sound when you put your foot down. It's also a relatively inexpensive way to squeeze a few more horsepower out of your Mustang.