From the rear of the car, it’s most probably an import so officially a Eunos. V5C will show MX5 as “they” seem to have an issue with recording what it actually is.
Last few years MOT’s show exhaust emissions are high, but a 1992 import can be tested as if no cat converter is fitted, so maybe the testing station was unaware. Otherwise, all the MOT’s recently dont specifically mention corrosion as a major issue so you may be onto a winner here.
I use an iOS app “Vehicle Smart” and you can look up all the past MOT info for free. Subscribe if you want to enter your own car into the “garage” and keep additional info. Very useful app as you can also check other cars tax, mot and insurance status in the event of an accident.
Imports can have a smaller front numberplate so you may want to get rid of the sail on the front. For example . .
Import Number Plate
Enjoy your Eunos, I love mine!
Some shots of mine over the last 4 years . .