Hey all! Having rejoined the real world of Thunderbird a year or so back with a '66 Landau (also a 2002 owner), I'm looking over Bullet Bird convertibles for a restoration project. I've seen the term "M" Code but don't understand what it stands for. Can anyone help me out? Thanks!

triple carb, sports roadsters I believe

MANY PEOPLE FIND THAT TRIPLE CARBS ARE A LOT OF MAINTENANCE, SO IF YOU HAVE HAD TROUBLE WITH THE TRIPLE CARBS I WOULD BE INTERESTED INTO GIVING YOU A MORE THAN FAIR AMOUNT OF MONEY FOR THEM. THANKS. frank@nygs.com

M code is is the type of motor the tbird ran
eg triple carbys. 3 2 barrel carbys on it and was only 1962 1963 tbird years Z code was a 4 barrel carby