Steering box can be rebuilt. Skills required are not beyond you. King pins can be replaced, again skills are not beyond you. A bent axle...OK that is beyond most of us. Repair/replace tie rod ends, that you can do. Bent frame? OK that is beyond my skill level. So what to do? Fix the frame(Pro help for that). Find another axle or find a shop to straighten it. Get things as good as you can. Fix one thing at a time. First test drive with my truck(52 1/2 ton) revealed funny steering and constant attention. It was toed out about 1/4 inch. Not good. But, silly me the numbers were in the book if I had bothered to look. Adjusted the toe in and the truck steers fine. True and easy when it is rolling. I also found that the spring bushings can play a big part in the stability so check them as well. Do those things you can. Get help with those things you don't have the skills or tools to do. Good luck. I have had good luck with a pro shop checking "used" parts before install. Think axle. Verification of a used part is part of the process. Who said learning is free? Let us know how it goes.
