swaq said:
Also, I was under the impression that the wing was an option for non-turbo cars (at least for certain years).
Largely depends on market, however, since SM is mainly concentrated in North America, I'll answer for here.
No North American N/A MK3 Supras had a factory installed spoiler on the hatch. The only time they will have one is if the dealer or previous owner installed one, and in most cases, you can tell if one was added by looking at the rear glass to see if there is a spot where there is no wires for the original 3rd brake light.
From the factory, all N/A Supras did not have the spoiler, and all Turbos did (in North America).