Front bumper bracket question

[mrein3]

Originally Posted by Tynee

How many different brackets are there for the front bumper on 67-72's? I was under the impression that there was just a style of brackets for 67/8 and a different style for 69-72. Are there differences between the front brackets for 4wd vs 2wd?

I know the front bumper brackets for a 69/70 4x4 are different than 71/72 4x4 because the 71/72 has to clear the turn signals in the bumper.
I'm not sure if the 69/70 4x4 front brackets are common with 67/68 or if 2wd brackets can be used on 4x4's.