are stock 2013 roush mufflers any differ from stock mufflers

[kona12]

happen to come across some stock 2013 roush mufflers with square tips wanted to know are they any differ in sound than like gt or gt500 mufflers. theyre not the race oval ones which I have already they look like OEM but with square tips. are they diifer or is it just oem with square tips..looking for some feed back

 

[mikerob]

There is an option on the roush with stock axleback with square tips.

 

[vortecd]

They have the same part number, just the tips are different

 

[kona12]

so is it a stock gt muffler with just square tip or is it a total different muffler as far as sound