You can use your 64 mounts. They will align just fine. Ford did not change the engine mount pattern on its blocks. You will need the early 64-65 Comet/Falcon and Mustang engine mounts to work with your early frame mounts. I would drill a hole through the rubber mounts and add a bolt and lock nut so they can not pull apart. The rubber is prone to breaking.I have 64 Frame Brackets but I read somewhere that the 289 rubber mounts will not work with a late model 5.0 as the holes dont line up.
Which Rubber Motor Mounts do I need with 1996 5.0 ?