I read a lengthy article from someone who had first hand experience, being the son of some of the first hippies to settle in the Matanuska Valley in Alaska that brought the original genetics with them that started off the whole MTF legend. He said ATF was not quite the same animal, though it had MTF genetics in it. The taste and high you describe fits his description. He said the muskiness/spicyness was unmistakeable on your sinuses when you hit it, not quite like anything else. He claimed the genetic origins were Sativa since Indicas were not readily available in the US or Canada in the early to mid '60's, though the plant has Indica looking traits. He did say he believed the only true MTF left was in clone form and difficult to find. And most of what the few seedbanks that carry it have called MTF or ATF isn't the real deal. Sativas can have these traits with some highland varieties from Brazil and Africa. In the early days I grew out some seeds a dealer we knew had been saving, claiming it was the best stuff he'd ever smoked. It was distinctly Sativa in many ways except it had small leaves that ranged from 3 to 5 medium width blades at the most. They were unusual plants that didn't quite fit the standard definitions including Ruderalis. Though seemingly mostly Sativa, the plants responded to 12/12 faster than everything else in my grow room (4 other strains) and finished faster as well, though one of my plants was a notoriously fast finishing Afghani. These plants finished up blindingly fast and autos didn't exist then. The buds were all smallish golf ball type with an orange tint when done, and the stems went off at angles from the nodes rather than remaining straight like most varieties. It was the gange! Sweet and certainly Sativa-like taste and cerebral high. It wasn't MTF, but it helps show some strains don't follow the typical classifications.