I bought my No Name FreeFlow Muffler off of Ebay.
$60
Midas Mandrel Bent 2.5" pipe from my cat back to the muffler
Removed resonator
$170
Exhuast sounds Great, Deep, Not loud enough in my opinion.
Custom Piping is the Only Logical choice.
The same diameter Pipe will give you the Exact Same performance gains.
My Cheap Ebay mufflers finish is 100% A Ok, 1 year later.
Sorry can not post picture (fortunecity server)
But here is a link to my Muffler.
http://members.fortunecity.com/4jacks/muffler.jpg