I got tired of the rasp and loudness of running 4" round Magnaflows as the rear mufflers on my SVT without a resonator. So I installed a 40 series Flowmaster in the position of the resonator. While I was putting it together I had just the Flowmaster and not the rear mufflers installed. I started the engine to see what it sounded like. It sounded real nice, very deep and loud with no rasp at all, it was just as loud as it was without a muffler but much more pleasant of a sound.
The Flowmaster is a tight fit. The heatshield under the car where the stock resoantor is needs to be "adjusted" a little to fit the muffer in.
