NEED HELP on MOTOR MOUNTS 1965 Mustang FASTBACK

Well I have decided to keep my 65 Fastback... Putting the 302 motor and tranny in it and I have the correct frame mounts but the motor mounts I got dont seem like they are the right ones. First off, they do not rest on the tab at the bottom of the Frame mount. Secondly if I line up the holes between the frame mount and the motor mount they will sit about 1 1/2 inches above the tab on the bottom of the frame mount.

This is not the problem that concerns me though. The problem is both mounts are exactly the same. Every website I check says that these are the right mounts and that they are interchangable per side but if I place the mounts on the frame mounts with the bolt through them. There is about an 1-1 1/2 inch difference between them. I know the mounts on the block are the same distance from each other. Is this just an optical illusion or am I missing something here. Just to clarify, the mount on the drivers side sits about 1 1-1/2 inches further back than the passenger side mount!! The part number I have is from Anchor and it is #2287. I will try to send a picture later if that would help better explain it but would really like some input here if you have any. The tab on one side of both motor mounts is longer than the other side so if they are truly interchangeable then one side would have the longer tab and one side would have the shorter one.....

Thanks in advance..

Mark
TOOFUN