traction bars/antiwrap?

anyone out there in the 3rd gen world running any type of traction bar, or antiwrap device? I seem to be getting a lot of vibes lately on my nearly stock 2016 TRD OR...

*only mods are the 1.25" wheel spacers that are torqued to spec 95ftlbs per instructions with blue loc-tite, and I did get the recommended extended thread open lug nuts. tires are stock sized 265/65/16 geolandar AT's.

each time I have been to the dealer I have raised the concern of the vibrations upon braking, but now it seem even coasting I am getting a vibe.. they stated they drove the truck and didnt notice any vibrations. that its normal for the truck to stutter (vibrate) under heavy braking.

I am eventually planning on putting an AAL, or HD dakar packs out back with 5100s.. and 2-3" lift up front on 5100's. I was thinking a 4* steel shim to set the pinion angle up.. permanent fix I think would be the anti wrap bar, but didnt know if anyone was running one...

 

I know, and i mentioned it to them... they said the fix was to replace the U-joints.... not the leaf pack...