that's awesome looks like the bolt will serve as the stop. I'm running stock spindles.that pic is with the suspension loaded btw.The contact point in your set up seems to be at the top edge of that aluminum disc too. If that pic is at full droop. I bet it would jump over the stopper at full compression. Are you using G body spindles?
I am using Blazer spindles so I was thinking it's the odd combination of non stock parts. UMI control arms, the tall ball joints and Blazer spindles.
I didn't want to sacrifice any steering angle. It's already crap at 25 deg. Are all G bodies like this?
So as UMI suggested, I drilled and tapped the spindles for a 3/8 socket head cap screw.