Just changed the front nearside hub knuckle on my S16. The new one (2nd hand from the wreckers) is cast in a slightly different way - however as far as i am aware, the locations for everything (shock mounting point, ball joint mounting point, etc) are all corresponding to the old one.
However, now the car sits a little higher on the side with the new knuckle (nearside) by about 1cm.

Thus emerges the question. Are all 306 hub knuckles the same??