How much would it cost to install a muffler on my Audi A4?

i have a 99 a4 2.8 quattro.

how much would installation cost and is there anything else i need to buy for installation besides muffler?

This is the muffler im considering also could someone tell me if it will for sure fit?

http://www.meganracing.com/products/product_detail.asp?prodid=65%26amp;catid=45How much would it cost to install a muffler on my Audi A4?dfdfdfHow much would it cost to install a muffler on my Audi A4?Call a muffler shop and get a quote. For what it is worth, this is a universal product- get a Leistritz or Magaflow- that will be a better fit.