I've heard the model year is actually about six months after the production date. My LWB R75/5 was manufactured in December of '72, but it wasn't shipped to the states and sold until a while later. Thus, it's a '73 on the original title. The same is probably true of yours. It definitely appears to have the extra length welded onto the swingarm. Anyway, I don't know why I'm worrying about it. This is clearly a troll thread.