Thunk into reverse is the differential mounts, but you'll need the special tool for that. No special tool needed for subframe mounts - just technique :)

Wolf, best to take this vehicle to a reputable body shop that specializes in MB work and have them check the dimensions on a frame machine. That way you will know what needs to be done to get this vehicle back to factory specs. You need to repair this vehicle correctly, otherwise you will experience odd handling, uneven tire wear, etc. It will never drive and handle properly ... and may cause you to be involved in an accident.

That is precisely the plan. I'm going to mount new tires and give it a look over underneath next week and I may pull a few measurements on it, but I'll never be content untill a real frame guy does so.