Mounts for a magnum?

64-66 V8 brackets are different than 67-72. They also take different rubber insulators. If you search here you can see the difference and also there is a schematic on how to modify the one side(don’t remember which side) for the 360.

Ok, now I'm getting somewhere. Now, will all small V8 brackets be the same for 64-66? If I find a 64-66 "someothermoparwithav8", will it be an appropriate donor?