High Speed Vibration 72 Duster help!!!

uni-lugs rims.. are they Keystones? <- this may not matter, it is just the experience I have had. My brother-in-law had a set on a front drum brake car years ago - there is a weight on the outside/face of the drum that interferes with mounting the wheel, you'll need to get a set of spacers if this is the case.

I had heard that uni-lugs have alot of problems but i am running regular wheels now with the right bolt pattern.