Thanks!
It sounds awesome. It was straight piped, before, and it was LOUD then too. It's still straight piped, but now the sound has a little bit of a lower tone. I actually think it seems slightly quieter when I hear him coming up our street and driveway. In the cab is a different story. It's WAY louder than before! No comparison. Putting the windows up helps a lot but, we love the way it sounds, so the windows won't be up while he's driving until winter.
BTW, it has a 3. 5" downpipe to 4" exhaust to the 5" Y pipe to 6" stacks. There is a lot less restriction!