So I went with MAC Ceramic headders for my 04 gt. I am going to be using the BBK O/R H pipe under my bed for my mid, and im going to keep using the original stock mufflers and exhaust. WTF is this gonna sound like? haha. I think it might sound good, I was just wanting thoughts, I dont know alot of people that keep stock exhaust, usually its the first to go.

 

i dont know...... think it might still sound better with aftermarketmufflers, but you can always try it first. Never really heard of anyone doin that, let us know what it sounds like

 

it'll get alot louder than stock exhaust, but new mufflers will definately make it louder and sound better.

 

it will still sound alot better...i just did an o/r x pipe at first and it sounded sweet like that...so it should sound pretty good...but it will help wit performance alittle if u get a new cat back and sound better...

 

It might sound alright but it'll sound better with aftermarket mufflers than stock ones, you should just buy some flowmaster or something and put it on there when you already have it apartbut thats justmy opinion

 

I dunno... stock mufflers sound like **** with anything but stock stuff in front of it.
Same thing with a Mach 1... I've listened to x-pipe with stock mufflers and h-pipe with stock mufflers and it sounded pretty bad.

 

i have mac longtubes and o/r prochamber with the stock mufflers. alot of people like the sound including me but its not loud enough, ive heard that the prochamber/flowmaster 40 combo sounds REALLY GOOD! so im going to probably do that.

 

i dont understand why you would want to go through doing all that work with the headers and everything and then not finih the system with getting a cat back, makes no sense