Well i have an 8v, same dials as you but the petrol gauge is diferent, with 4 red lines.
The speedo will read out, its an old car mate. Mine is about 5mph out 70mph.
The dials are deffinaly the correct 8v dials, what year is your car?
You dont have a problem, so dont worry about it. There were a lot of developments in the eira that the mk3 was made, hence why they differ early to late.