I have a question about these, my bushings are SHOT in mine on my TJ, so shot they let the axle move.

i was looking at the Iron Man uppers and i like them, but when i bought my lift kit, cheap of course, they had me drill out the mounts and use some shims to re adjust the angle for the lift. if i install new uppers how will i fix where i drilled? or do i just bolt the hell out of it and pray?

also is it worth going for the johnny joints? thanks guys.