You can check on the magnaflow website too, they have a dealer locator. I found out that the local autoparts store was a dealer, and since my dad's business buys a lot of parts there, they gave me a 10% discount.

 

What diameter of muffler is that?

 

i believe he said 4 inches

 

I got to say that I love my magnaflow cat-back exhaust. I bought it off of autopartswarehouse.com for $375 w shipping. It also came with a tube that replaces the converter but I didn't use it. The sound is exactly what I wanted, deep, and robust. I'm planning on getting a megan raceing header put on soon, hopefully the sound will still be awesome.