Buying frame ????

[72 Super]

I know this seems like a dumb ?? I am trying to locate a clean damage free 72 longbed frame.

If I buy a bare frame is there really anyway to tell if it ever been in a accident of any kind.I know if it is really bad I could tell by my eyes but what about if its bent slightly would I be able to tell.

I,ve considered buy a complete truck,atleast I will know eveything lines up correct.

On my 72 That my father bought new,it has had frame damage and the right front wheel sets back farther than the left.Plus its rusted by the steering box so I want to get another frame.
Any help would be great.

Thanks