Need help from the truck alignment twisted frame gurus

I bought something I shouldn't have.

The plan was I needed a new joe dog to pull my 4 axle float. Farm duty, but we put on some miles.
I wanted spring suspension and Budd wheels. These are hard to find. I found a triaxle dump at the wreckers. Made the deal. He cut the rear axle clip off, pulled out the expensive axle bits and I brought it home.

Started cleaning it up and found the frame has a pretty serious twist in it. I think it got worse when he cut the rails, it wasn't this bad...

Need help from the truck alignment twisted frame gurus

Need help from the truck alignment twisted frame gurus