how about a sn95?
Yes, can do
The early sn95 with the rounded shape would be built similar to the 3rd/4th gens, with the brackets flat on top of the trunk lid. I would need to visit my local pick 'n pull for a trunk lid
The late sn95 is shaped similar to the Fox, and I would mount to the rear of the trunk lip, with 6 brackets to avoid the center key latch, as I did here on the Fox:
and, here is the Miata spoiler:
And the latest 3rd gen build: