I have an '07 GT with stock exhaust right now. Are the '07-09 GT500 mufflers a direct replacement? If so, are they going to sound much different?

 

I believe they're the exact same mufflers on 07-09's. I compared the oem mufflers from my 09 GT with the ones from my 09 GT500, & saw no difference.

 

Up until the 2010 model year the GT500 used stock GT mufflers for an automatic - right off the parts shelf, same part number, nithing special about them.

People pay lots for GT500 parts that are stock Mustang parts. The side skirts are just the stock V6 sude skirts for another example.

 

Gt 500 kr mufflers,great sound.

 

So the KR mufflers are different then? How hard are those to find?

 

I've seen them on ford racing parts direct,there is also a sound example.

 

Part Number: M-5230-S

 

I just installed Gt500 axlebacks on my '06 GT last month and they sound great. More aggressive than stock and the tips are sweet!

 

So they aren't exactly the same then? Are the tips bigger than the stock GT exhaust as well?

 

Check the part numbers, unless you have the GT500KR mufflers, they are the same part number as the stock GT for an automatic up through 2009. It wasn't until the 2010 model year that Ford put a different muffler on the GT500.

 

a buddy sold his shelby, put it back to stock- gave me a bunch of stuff he was gonna toss out...i gave most of it to another buddy who had just rebuilt a wrecked shelby, but he didnt want the magnaflo mufflers, as he just bought a full exhaust...i went to look up the part numbers to see what years theyd fit, hoping to find someone to take them, was surprised to see the gt500 and base gt used the same parts- so threw them on mine they are a little louder than stock, but not 'loud'... my buddies car though sounds wicked- think its got 3" all the way, x pipe, etc- he drove by a couple days ago, saw us out in the yard and revved a bit as he went by- my 5 yr old screamed "that scaawed me to def" you can definitely hear his car coming...