Yes it can be done,
Im not too sure if you need the steering columb from a 90-93 to make it work as at 90 we lost the tilt due to tha airbag
Im sure you can just bolt it right up but someone on here would know for sure,
You didnt mention if you wanted the airbag to work or not?
If you do you need all the airbag wiring harness, Computer, and the 3 crash sensors for the fromt of the car and the 7 green grounding screws
IMO the 90-93 Steering wheel looks way better than the 87-89,
However I still dont "Dig" the 90-93 steering wheel anwyay
What I would do if I wer ein your shoes is either find a 86 Svo Steering wheel
Or a nice Black leather steering wheel from a 94+ with the running pony on it,
I have a pic of a Fox with a SN95 Steering whell and it looks amazing
I wanna do that If I ever find one cheap
Ill search for the pic