Some things are simply too expensive to repair. Take your car to a body shop that has one of the newer frame machines-these things are incredible, btw. My body man charges for several hours of labor to set up the car on the machine and then to go over it. If frame damage is found in a structurally important location they will tell you if they can fix it at a fair price. If you have a shop manual-make a copy of the pages with the frame data and take that with you.