iskwezm Would this be something youd be interested in? I was actually gonna see for the people who have or switched to the factory four piston Kelsey hayes and then later single piston Kelsey hayes. Would want a set up I know whith the early 65-67 four piston set up the hub in the rotor has a greater out board offset though but this would make it easier to source hubs so people with early factory set up don't have to source new or used hubs as well to do their disc conversion. If you wouldn't be apposed to sending the hubs from the rotors I could see how well is works out with the 12" rotors and everything on it. When you send the hub I could also machine down the od of your stock hub if needed if you'd like to do that it's an option.