ive seen some on the firewall as well, just wondering what this stuff means? im guessing the yellow is a part number for the rail cause the other side is stamped with 1407631. only the passenger rail has any yellow on it. thanks guys!
TX?? I mean if mine wasn't so rusty it'd be easier to keep cleanA more important question is how your truck is so clean...

I like seeing frames like this. My K30 looks like this but the numbers have finally worn off. Still lots of paint in other areas though.A more important question is how your truck is so clean...
