Trunk floor interchangeability

Does anyone know if the various models in a similar year have the same removable trunk floor (the piece that covers the spare tire)?

I have an '96 XJ12 that is missing that and it would be much easier to source from an XJ6 if they are the same.

I have one from a series III if you want it.
PM me the measurements and Ill check.

I don’t think a Series III would work.

The only way we wlll know is if you measure it.
Let me know if there are any jogs or tabs.