Yup, date codes on Fords are so stupid easy.... C=6 D=7 E=8 F=9. like in the date code above the LETTER dictates the third numeral in the year, the number afterward is the final part of the equation and only dictates the beginning year the part was patented/manufactured. IE: D5= 75= 1975. E7 would equal 87 which would equal 1987. if anyone didn't already know this, now you do.