Congrats on the truck, you definately have to do something with the exaust system, it is as quite as my wifes buick. What I did was cheap and fast. I took it down to the muffler shop told them to take the muffler off and replace it with stainless pipes from the second cat back. It now sounds AWSOME it is still quite when cruising down the E way. But it is VERY raspy when you let the gears slow down the truck, it crackles and pops like mad, but it still sounds great. Any how, if you want to hear mine I only live on 23mi & I-94 so its about 15 minutes away from sterling heights.