Another one I like that is also T304 is the Steeda system, I know I never read anything bad on SVTP either about them. I would definitely go with a T304 vs. T409 though.
Steeda Autosports 040-13868 - Steeda Autosports Stainless Steel Cat-Back Exhaust Systems - Overview - SummitRacing.com
Steeda Autosports 040-13868 - Steeda Autosports Stainless Steel Cat-Back Exhaust Systems - Overview - SummitRacing.com