some pointers
Well, this is going to be a somewhat long post, be forewarned.
Are any of those estimates from a D-C dealership? I would get one or two from them. You will need some things replaced.
Tires... did they skid on the pavement? Count on getting four new ones if they did.
Hitch. . You MUST have a new one, and do not forget the extra cost for the factory reinforcement towing hitch brackets that are part of the recall (which I hope you had done). Also count on all new mounting hardware as well.
I would not count on needing the frame straightened until that bed comes off or is completely loose. The body will hold the frame out of position vertically when the body is bent. The frame will flex a lot. The body will flex and not return as far because the frame is designed to flex vertically, and the body is not. The hitch should come off as well because that can hold the frame out of position.
Count on the extra time to remove your fuel cell and box. How else can you fix the front of the box and the back of the cab? The cell should come out anyway and be inspected for damage. If you have two compartments, the unbalanced load from side to side can cause the truck to sit funny and someone can bend the frame out of position instead of into postition. Being the factory tank is on that side as well, it too should be inspected.
Whoever wants to cut and weld the frame is nuts. Dodge frames are hard and can crack if welded. I believe you can replace one whole side of rail from front to rear, but that is as bad as replacing the whole frame. You can cold bend them, but if they show any sign of crack of weakness, that is it.
I would be worried about cracking a pinion gear tooth or ring gear tooth. The force of impact will hit hard on the one spot of contact betwwen gears. Another member here was hit from the rear and he had to have it replaced a few weeks later after the body was fixed. Your brakes may have held the rear solid, but you were forced around some.
Keep track of all expenses medical wise. Pain/suffering and personal injury claims are much easlier with documentation. Your medical bills will still be piling up months down the road due to chiropractic visits and any other ailment due to damge to your back and knee.
When the fixing part is done, make sure you watch what is going on with your truck and how it is being repaired. Do not accept any money in advance of work from the insurance company, as other things will be found bad.
If the truck is totalled, you can by it back, but there is no warranty from Cummins or Dodge after it is a salvage title. If the frame is found to be bad enough to total the vehicle, do not be foolish enough to think it can be repaired once you buy it back.
Remember that this is your vehicle, and you tow with it. Your life and the lives of countless others can be injured if the repair fails. Your own insurance company can be a big help, as your liability (and your insurance company) will be on the line if anything happens down the road. Ever see the damage a loose gooseneck or tandem trailer will do after it breaks free from the truck, especially when it hits somebody head on???
I am a certified bodyman myself, and I always look out for the customer. Find a shop you trust to get the job done right. If the frame cracks or shows stress, the repairer must stand up and let someone know. The other party's insurance company will raise hell, but that is too bad. I love my truck dearly, but if it was ever wrecked bad enough to crack the frame, I would not hesitate to cut it in two myself. I have seen people who should have known better try and fix something just for the sake of money. There are too many sue-happy people, and personal liability cases bring settlements in the millions of dollars.
Sorry for the seriousness of the post, but this one hits home. If your frame is bent, make sure it is fully inspected the entire length for stress both from the accident and from the repair.
I told you this post was going to be long, almost an hours worth of typing.
