There a few different steering wheels for the 6th gen celica.
I will try to show as best as I can.
this is the 4-post wheel that came on the 6gc from 94-97
this is the non airbag wheel that came on the gt-fours or JDM/EDM celicas I believe. US did not receive these as an option.
and this one is the 3-post wheel that has airbag. They were available on the 98-99 models.
lastly the good thing about toyotas is that alot of their steering wheels will interchange with each other.
alot of members switch out their wheels for ones from other models like this rav4 one:
as well as the more common ones like this. These can be found on alot of different models (7th gen celicas, 8th & 9th gen corollas, matrix, supras)
Malpaso did a write up on how to change out the steering wheels and it was done on a euro 6th gen as well. take a look at the stickies and search feature if you need any more help.