The N/A wheel fits perfectly but the stalks are bent a bit more for the airbag wheel. You'll want to modify the ones you have or better, pick up a set from the donor. BTW, BMW changed the spline pattern in the mid-80s. Make sure you have a "Fine Spline" wheel like the late E30 does. You can also find them on e34s, E36s and e38s. I swapped a 'vert sport wheel into an E34 then into my E30.
Also make sure you get the little metal spacer on the steering shaft. I had to use two on mine - one under the wheel, one on top. The nut wouldn't clamp the wheel otherwise.
I think I have a set of non-airbag stalks if you need them.