I am prepping grilles right now. I have 3 sets of original unrepainted '67 non-400 grilles, one piece of '68 non-400 grille, and one set of '68 400 grilles. I also have a brand new OER set labelled for '68.

The center rib is the same size on 400 and standard, the difference being the three holes, two in the rib and one on the side.

The '67 and '68 both have a flat black grate that matches well to SEM Landau Black, and bright silver piping on the raised area around the grate. The '67 has a silver surround, the '68 has a charcoal surround. The colors are the same regardless of standard or 400 for the respective years.

The OER are sorely flawed. They have the right color charcoal, but it is applied to the grate rather than the surround. The silver piping is a good match. The surround is gloss black and looks ridiculous. The hockey sticks are decent castings.

Has anyone located a great match to the original '68 grille surround color?

I can post photos of all if anyone is interested.