I did some research and I think the difference is manual vs automatic trans. Glad you made out ok.Success! The SE is now much quieter and the ZX3 is much louder. Looking at the mounts side-by-side, I could not tell which one was good and which one was bad.
FYI, although the mounts are the same, the brackets are different enough that I was not able to swap the whole assembly and had to reuse the car-appropriate bracket. Not sure if it's a difference between model years or between the sedan and the hatch.