easy engine mounts

Well we didn't get around to putting the motor in, but I did measure the truck mounts. They are just a hair over 4" high. With the thick biscuit it's about 5". Does that sound right? I'm talking about using this on the right(passenger) side. Is that how high a Schumacher or Transdapt mount is?

My early (64-66) 273 mount is less than that so I don't think it will work.