i have a flowmaster 40. personaly the 4.0 sounds like a beast with just a cat and i wish i could get away with just that but my dad says its way to loud.

 

Summitracing.com Looking at the same thing here is a link...
http://www.summitracing.com/parts/WLK-17655/
$25 isn't bad.

 

i got my thrush welded from a local advance auto parts store. it was a 2.5 inch inlet and outlet, so a couple adapters welded on and it works.

 

you should check out spintech, sounds awesome and flows even better, unless you don't care about hp go with flowmaster and you want something annoyingly loud that still doesn't flow as well as a spintech go with the glass pack.

 

Thank you sir,
I assumed ebay was cheaper but not anymore.
Thanks again.

 

as far as flowmaster goes, the lower the number, 50, 44, 40 etc. the louder it is.