1967 U15 speed warning indicator with 6,000 RPM redline for L36 390hp427, L68 400hp427 and L79 350hp327 engines. I've had this sitting in a shoe box in my parts room since 1980. The date on the back is Feb 6, 1967 and the odometer reading is 25,787 miles. Oklahoma dust is free! Make me your best offer. Please call Bill Mock #93 at (918)214-5206.