Could someone with a 67-68 take a measurement for me?

[JohnnyK]

If anyone has a dismantled 1967-68, could someone take a measurement for me? It would be much appreciated. I'm trying to weld in those little brackets (I don't even know what they do!) that (They are only on the fastback I believe) are mounted on the rearend/shock hump.. The are welded to the support that connects the roof to the hump and to the front of the trunk floors. They look kind of like an L with a giant 1" or so hole.. I actually don't even know for sure the orientation of how they mount, but I have new trunk floors in there, so there are no weld marks from where they were mounted, and since they might prove to be important, i want to get the distance between them correct.. Thanks guys