Originally Posted by JimmyM

His post sums it up.

S-Type sounds good, but is more expensive and not as loud as the Roush. That rust issue did exist, but Roush has claimed that they fixed it and have replaced rusted mufflers without any hassle.

The Roush only gets raspy under WOT above 3k, where it turns into an entirely different beast and the decibels go off the charts. That's what I like about them. Everything below 3k during normal driving, it's deep and impressive.

My Roush ABs get compliments from both Mopar and Chevy guys - even strangers that start the conversation with "I don't like Mustangs, but that sounds ****in beast." One time, some guy in a red truck pulled up to tell me how "primal" the exhaust sounded. Rev match downshifting is music to my ears.

This is a video I recorded of my friends who both also have the Roush ABs. When the three of us roll together, it definitely brings attention. Video is kind of wack but it shows the Roush under normal and hard acceleration.

<a href="http://www.youtube.com/watch?v=UHqvBuZ07TA">YouTube Link</a>