Don't post on here very often anymore, but I have made a few changes since last time. No longer having any issues with my Sherpa rack. It used to shake at speeds 70+. Also was kinda noisy. But after removing it entirely and rebuilding it, all issues are solved. I moved the front air dam as far down as possible so it touches the roof-line now. Also shifted the entire rack back as far as possible too. Great improvement. Super quiet now, and no movement whatsoever.

Also I recently got some exhaust work done....my DT ypipe had to be replaced by warranty because the old one was rattling like crazy. After installing the new one I still wasn't very happy with the sound I was getting, and the muffler shop who did my old flowmaster did a bad job with the welds and didn't use enough supports, so the tail pipe section would rattle against my frame.

Took it to a new shop with the new ypipe installed and came up with the crazy idea to chop the y merge and run true duals out the back. Went with a Magnaflow dual in dual out muffler and some 3x18 stainless tips. It sounds like a real badass truck now and is soooo much smoother. Its quite a bit louder than expected but I'm happy for the time being, and the guy who did the exhaust did a good job and everything is very well built and shouldn't have any rattles from here on out.

Gonna take some exhaust vids soon enough...