Got my magnaflow installed today.
Part Number: MPE-12229
Case Shape: Oval
Inlet Diameter (in): 3.000 in.
Inlet Quantity: Single
Inlet Location: Offset
Outlet Diameter (in): 3.000 in.
Outlet Quantity: Single
Outlet Location: Center
Internal Construction: Perforated stainless tube with packing
Muffler Material: Stainless steel
Muffler Finish: Natural
Case Length (in): 14.000 in.
Overall Length (in): 20.000 in.
Thickness (in): 5.000 in.
Width (in): 8.000 in

Wasn't as load as I expected. Can't even tell it at idle. Hardly no drone at 65. Has a pretty good growl at WOT. Just thought a muffler so small that you can see straight through would be louder.

 

I'm looking to run a couple of those on my truck.

 

I have 2 of these with 2.5 inlet/outlet, 4" round instead of oval though. I plan to install them one of these days after I swap my LQ9 in. Have a Magnaflow x-pipe waiting for install also

 

I still say, if you want magnaflow, check out the dynomax's first.
same design on the ultra-flow's as a magnaflow. save 20-50 bucks though.

mine is a stainless steel 4 i/o...

 

Get someone to drive it by you and see if you like that. The loudness in the cab would get old fast.