'83 300SD body/frame question

[engatwork]

This is my friends 300SD that was recently "totaled" by the insurance company. As you can see by the attached pic the frame rail (for lack of a better term) is bent toward the center of the car. I'm thinking a little time spent on a frame machine can probably sort this issue out. Everything else is just sheetmetal replacement. Unfortunately, I do not have a frame straightening machine here at the house. I could possibly come up with a comealong attached to a tree but then the car will probably just slide sideways when I pull it toward the tree. Any thoughts/comments are welcome.

Any idea what it should cost just to have this section straightened out?