i know not to many of you are in love with the 71-73 mustangs, but this is becoming a common thing now, i have been offered 3 cars M code from diffrent sellers and there is even one on ebay right know from a guy who id think knew mustangs, all of them telling me they have the M code Cobra jets, in 1970 and 1971 there where M code 351 4v engines and q code 351 cobrajet cars ran from 1971 to 1973 and in 1971 these where rare beasts 32 hard tops, 108 fastbacks and 5 convertables, so when i get a email that says i have 1971 351 cobrajet, then i drive 400 miles and its a M code i get a little disappointed! any way just leting anyone who dosent know know!