OK, hold the phone here! I've seen BOTH red AND turquoise on '68 340 engines. Both claiming to be OE on the color and magazine reports are the same, as far as beng OE correct. There has to be a pattern or something. Like a particular plant is using one while another one is using the other. Anyone wanna give me the poop on what the story is?? Both colors were on Darts and Barracudas. From what I've seen, magazines and in person, that year seems to be interchangeable.