Never heard of it, but that doesn't mean much. While the "branded with a hot iron seats" almost certainly sounds like BS, there were LOTS of "specials" and oddball Mustangs built back then so everyone with an odd combo thinks their car is something special. Just for the record, there is no such thing as a 64 1/2 Mustang if you want to get technical. ALL Mustangs produced in the early days (1964-ish) are 1965 Mustangs. Sure they have a generator and some have a 260 or a goofy 5-bolt block, but they are still technically a 1965 Mustang. It's just that some enthusiasts with too much to worry about started calling them '64 1/2 so everyone with one jumped on board that one. Hey, my car has a super rare (for a '68 fastback) bench seat! Know why they're so rare? No one wanted one, either then or now! As for your buddies story, I don't buy it for a second, but I could be wrong...