Reviewer:
Gustavo Molina Pssel from Santiago, Metropolitana Chile
I've just installed this is my review: Very easy to install, it takes about 30 minutes.It is easier if using a lift (I did). The muffler set in question is bolt-on, no welding or cutting required. Another important thing is that you can switch back and forth the mufflers. The exhaust tone is louder and throatier than fabric indeed, but the sound is also different; sound is race car alike, however not so loud. So you can drive in the city (low RPM's), no problem. Over 5.000 RPM's the sound is almost insane, which is always welcome.
In summary, this product is highly recommended for Shelby's GT500 (2013 in my case) owners.
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2013 MUSTANG SHELBY GT500 SPORT MUFFLER KIT (49 ST
October 28, 2013
Reviewer:
John Piveral from Florissant, CO United States
Excellent
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Prompt service
May 21, 2013
Reviewer:
Anonymous Person from SUCCASUNNA, NJ United States
I had these mufflers on order with my local Ford Dealer for over six weeks. I had been told that they were back ordered. I called FRPD and had the set in three days.
Amazing Sound 
