1967 68 GMC front bumpers

[sharpie1972]

After looking at quite a few pics it seems that most of the painted 67/68 GMC front bumpers don't have the notch for the marker lights, but the chrome front bumpers do (My 67 GMC has a notched chrome). Is this factory, or have the chromes been replaced with later year bumpers with the notches? Any GMC experts have info. on this? I though all GMC bumpers had the notches until a member mentioned they did not and I started looking at pics of original trucks. Thanks, Sharpie