Shortbed frame

[Vandals909]

I'm in the market for a 67-72 shortbed frame. Is there differences between them? From what I understand the dimple for power steering is the only difference?

What should I be looking for as problems when looking at frames? Obviously bent horns.

How do you make sure it is straight, just by eyeballing it?

Take measurements? If so, where?

Does anyone know where a nice 67-72 shortbed frame is in the southern California or Arizona area?

Thanks!