Hello, The brake line mount on left side housing, There's a paint line or greese pencil mark where the Rockford bolt holds the brake line bracket to housing. In the Perkins article I read it said it helped the assy guys on the line fit the pieces or find the hole.says it's a blue/green color, it's kinda a run of paint I'm guessing, Any one know what color and is a paint or greese pencil. I have a few color pics but that part very small hard to tell. Thanks Greg Seattle 70 G O Boss 302 RESTORATION 80% Done