HELP! Broken shock bolt. Safe to drive home??

[AnotherWs6]

Halfway to work on my 34 mile commute I heard a bunch of sounds like metal hitting my under carriage while on the highway. Long story short one of the front shock bolts let go. Truck feels fine, I keot hearing clunking but couldn't notice anything physically while driving.

1 - Is it safe to drive?

2 - Is the frame threaded or is it a nut and bolt setup?

3 - What is the correct hardware to use?

4 - Why would the PO use a stack of washers like they did? Both shocks were like this. I wonder if it is to make it clear the frame. Maybe they arent the correct shocks?

Broken shock bolt is passenger, intact is driver. I would appreciate any feedback. I'm a long ways from home, really sucks. My truck is not lowered BTW.

Pics coming up....