Firewall markings

[davepl]

My truck has absolutely no markings when I tore it down. Unless it underwent a full repaint including the firewall before, which I do not think it did.

I'd like to add a couple of subtle ones just because everyone expects them to be there.

Is there anything that ALL trucks should have, like a color code? My plant code is Z.

I wouldn't mind a color code and sequence number and leave it at that. If I do that, though, where do they go most commonly, and what sequence number do I use?

From the paint mark threads I've read so far today the CE123456 doesn't seem to match up to the VIN or sequence number, or so it's claimed.