deepest sounding 3 inch muffler replacement

[Mustang_Lou]

Here's another vote for Magnaflow Competition axle back. Got another complement today on the road. And absolutely no drone as the stock straight through H-pipe is retained. LOVE IT!!!

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[Burkey]

Magnaflow comp on my rig.
Started out with just the Axle back, minuscule drone.
Added headers, 3" custom section with H pipe and a glass pack each side.
LOUD and drones. But, it's crazy deep.
I honestly don't think you can produce those deep bass tones without some drone.
Haven't heard the Krona system in person so can't comment on that but the clips are good.