Used Hooker #5204 are dented, why?

I picked these Hooker #5204 up recently, and just wondering why the dents are where they are?- anything I understand the scrapes you can't see on the underside and I have a plan to fix those, but where these dents are has me wondering if I leave them alone? thanx, crossy

A body hooker headers (2).JPG

A body hooker headers.JPG