I had a machine shop look at the block today and they said it was a Police Intercepter 428 block. If these are the original heads for this block could this engine be correct for a 1968 GT500??? From what i read the 428 CJ Motor was not released until Feb 68. The earlier cars before this would have gotten the 428 intercepter Motor. The reason I ask...My father has a friend that is restoring a 1968 GT500. He does not have the original motor. I want to do the research before i make the phone call and get his hopes up. What do i need to look at in the bottom end??? Did Ford put Vin numbers on these motors so I can tell if it was a Mustang or Fairlane?

Is this a sought after Motor???? I have no use for it and plan on selling it. Any idea on what it is worth?

Matt