So I called Nissan, who put me through to a dealer here. According to them I can't buy just the bearings so they wouldn't give me the part number. The hub assembly they do for around $400 :/ Anyone replaced these before know the part number I need?
Front bearing actually. I was looking at this post:
It says "S14/S15 Front: For s14/s15's you can't replace the bearing itself you need the whole hub assembly!"