There is only one way to find out!:pface
I am going to take a stab and say that the hubs/bearings and spindles in the front probably won't work. You'll probably have to do the same things that everyone who swaps for z-brakes and 5-lugs have to do (that is, get the s14 hub/bearings and spindles and a s14 ball joint in a s13 cntrl arm). I will also guess that you may have some brake line issues (the page I linked you to should have info on that).
Let us know what happens.