When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
In '03 or '04 Dodge went with a 4" from turbo to tip as stock exhaust. You really don't need any bigger unless you plan to exceed 500 HP. In fact is has been stated many times that if you go bigger than the 4" and are not pushing very high HP you will loose some low end torque. A free flow muffler is all you really need and you will be set.