In the quest for better road manners, I went ahead and moved the rear shocks out as much as I could. The end result is a more stable ride, that didn’t limit the rear flex that much (who needs flex when you’ve got lockers anyway ). Unfortunately, it still didn’t cure my wheel vibe, but it did help calm it down quite a bit.
I’m pretty happy with how this turned out as it greatly improved the road manners of the truck. I wound up running limit straps in the original shock mounting location and that worked out sweet.