Different height passenger side engine brackets

I have some pics of mounts I took for reference for someone in the past.

Far left is a drivers side 273 - 318 , X block , Resto or R3. middle is drivers side 340 which will fit a 360 also. far right is a passenger side 273, 318, 340, 360, X block, Resto, R3.

I have some different mounts as you state but I never compared to see which is correct. What I can tell yo I just pulled a 71 340 and it has the same right mount as the 68 340 sitting here on the floor. The 71 motor had steel pads and sat level in the car. The motors I believe are sold but I can take a pic of that mount before it is paid for and picked up. Or I can compare one I have off that is the same and take a pic showing the measurements. Let me know if you still need to know. Steve