Mounting confusion

This is the mod I made to the crossmember for the new mount location.
0616181110a.jpg

This is the original 1964 slant 6 904
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These next three are the transmission I have now, pulled from a 1965 Coronet. Has 904 in large raised face and takes the same pan the slant 6 transmission did.
0517180632a.jpg 0517180633.jpg 0517180632.jpg