As Chewy says, the round “fit” much better, especially on a 67.
I put light in my bumper, from the Idea of seeing the “Chrome Bumper with Fog Lights” in the LMC catalog.
The problem I had was that I didn’t want Chrome, so I made my own holes in my white bumper.
I measured and remeasured a hundred times to make sure they were exactly spaced. I first attempted to cut them out with a Hole Saw. That failed miserably. Then I had a local welder dude cut them out (a little small) with his acetylene torch.
I then carefully ground out the holes with my angle grinder to-get them perfectly round and the proper size..
Tomorrow I’ll take/post a few pictures and tell you the size of the hole.
I had to fab the mounting brackets also, but I think they turned out pretty nice.
More to come tomorrow