I am going to have to replace the rear frame rails in my 72 camaro. They are rusted past the point of being safe. I haven't replaced frame rails before and would like to avoid any problems a "rookie" might make. I have done other body work on this car but not any frame work. I am in the process of restoring this car from front to back. Does anyone have any pointers or words of wisdom to steer me in the right direction concerning the frame rails? I would appreciate some help with this. Thanks!