Paul, that's the way my frame is. You are good there. Mine was all bent up and I used some 4" rectangular tubing. 4" channel will also work. The channel looks about like the original except a fraction of the cost unless you're putting it back all original. I stayed about as close to original as my budget would allow. Many things I made myself or updated for improvement . I still have some things I want to improve but after driving it a few days it's not really bad for a 52.
Ronnie