When you look on the Japan auction sites with this "type" of adapter there is two different prices. I never understood why. I just looked them up, and there is something written that says the reason for the difference. The pictures on the two ads one uses the 240z hub and one uses the 260/280 hub. All the other pictures are the same? It states odyssey rotors for the 260/280 hubs, however when I put everything into google translate it states for the smaller hub 240z a r33 gtst type m rotor is used. This rotor is still 296 mm and 30mm wide however I'm guessing that the hat height is different. Which I'm assuming makes up for the difference in thickness of the hubs. I'm in Canada so getting these rotors is fairly easy, I might try eventually to get a worn out rotor off someone for free pay to get it machined and give it a try. But just looking at this it looks like it could work, maybe........