I skimmed through the sticky for the V6 exhaust, but it seems to be concerning the 94-04 mustangs. I am looking to install a catback exhaust system on a 2007 4.0. It says it is made for GT only.
Is there a dual exhaust adapter availaible that will allow the installation of a 2005+ GT catback? (similar to teh 94-04 adapter) I am trying to stay away from a Y-Pipe, prefereably an X or H pipe WITH CATS!

If anyone can point me in the right direction, it would be much appreciated!

 

Here is a nice inexspensive way to do it.

http://www.americanmuscle.com/pypes-...l-catback.html

 

the only thing wrong with that is that those mufflers sound like ****

 

as a matter of fact, i talked to someone with that same system. He fired it up his 4.0 with that system for me, i wasnt very impressed.
I did research Pypes's website, i think i found a solution.
http://www.pysales.com/iwwida.pvx?.......
Seems like it will be perfect for my situation. With this, i should be able to get rid of the y-pipe and replace it with teh x-pipe. i can also use any GT axle back exhaust.

I want to make my 4.0 sound more aggressive. Does SLP Power Flow axle backs seem like a good choice?

 

I wanted to do the power flo but i couldnt affored it at the time but Id love to hear it on a six

here is a link of SLP p flo on a sixer
http://youtube.com/watch?v=UDV8wOy6USw

 

I don't know a lot about the 4.0L mustangs but I would assume they are still even firing like the 3.8 in that case you would not want an X pipe because it will sound like poo. H pipe ftw