Congrats on the 'new to you' tow rig. My tow vehicle doubles as my daily driver...an 04 High Output 4x4 with a 6spd manual trans.

I was a juvenile and removed the silencer ring out of the turbo. Everybody thinks the truck is all fixed up as a result. (Turbo spooling up is very noticeable now.) It's stock other than the too-big exhaust that was on there when I bought it. I painted that flat black so it is not as noticeable.