Help! Sway bar disconnect bolt?

[Spooky.truck]

Hiya! A bolt from my trucks lift recently come off, I believe it is part of the sway bar disconnect and have been trying to find the right part to order. It seems like a standard sized bolt with some kind of extra padding around the joint. 

[howeitsdone]

Drive to ACE or NAPA and bring the Driver's side bolt/nut to match a replacement.

[Spooky.truck]

I think there is a spacer missing too? 

[howeitsdone]

Is everything missing on both sides? What would be barring you from looking at the driver's side to know what you need? Not sure why you'd need a spacer. Photo looks like that just slides right into that bracket and bolts down.

[Airborne Janitor]

If those are the JKS discos that upper U bracket has a threaded hole that the bolt tightens into, it's not just a bolt/nut that holds it on. Take a look at that uppper U bracket to see if there are threads, if so remove the bracket and straighten it out with press/hammer/anvil/crescent wrench. Then use that bracket to figure out what size/thread bolt you need.