We’re trying to knock the DB down a little on the car, although even that stub can would be better than the straight pipes on it now 
I would have chosen the 2S mufflers but they only drop the noise by a few DB over the single core cans and are almost double the price(and these were already pricey as I had them made with 321 vs 304). Their OAL is also a critical factor in the exhaust design as the room in back is limited.