Hello Steve,
Is your car a 1991 or a 1992 model year?
Is there an M or an N in the chassis number before the W at the end before the numbers?
I presume a 1991 as back then the model years started in the October of the previous year.
If this is the case then 14" steelies were stock on the 8v.
Wheels were dealer fit options in those days and there was an Accessories brochure that listed what you could have.
15" BBS RA were never available from new for the 8v until they became standard for the 1992 model year run-out cars.
The fire extinguisher clipped to the seat mounting point of the passenger seat, limited life so anything truly correct will be out of date by now but understand why you need one.
Mudflaps would have been non-tailored and some usually came with little badges that clipped on.
Andrew