Now...I hope you don't roll your eyes...but I have a 4cylinder and I would like to make her sound louder and more...not sure how to put it...meaner? like she's growling?

 

I'm not sure how many dedicated aftermarket exhausts are available for a 4 cyl. Fox but any decent muffler shop could come up with something that sounds better and they can install a nice looking exhaust tip at the same time. If there is an independent muffler shop near you rather than Midas or one of those it might be a better way to go. Not that the franchise shops are bad, it's just that they don't always like to do something that's not off the shelf. Let us know what you come up with.

 

It's never going to sound live an V8. It's impossible.