Yeah, my dad's '77 AW250 has one too, and I think it's the same tank. In my humble opinion, I think that was the best-looking gas tank on any bike from any manufacturer. I hear tell that you can actually fit one onto an '81 Maico, so if I ever got one, I'd either put one of those on, or one of the next-year Magnum style round tanks. I've seen a couple '81s with '78 tanks and they look wicked.