When I said GTo hubs I meant these:
http://www.store.yahoo.com/phase2mot...s13fr5lug.html
Ok I havent done the 5 lug swap (I have COOL TE37's!!! YAY for ME!), but I think it goes like this. As far as the rear of the S13 you can only use the NA Z32 hubs or R32 skyline hubs. No other things are needed for the 5 lug swap. If you want to use the rear brakes then you have to get the spindle and all that other crap. For the front your only options are the GTO hubs I linked to and the S14 assembly with the lower ball joint. The GTO Hubs are direct replacement and will go into the S13 spindles, The S14 hubs are not. For the S14 stuff you also need the spindle, and you need to get the lower ball joint and replace your stock one. I think some company sells these with the moog joint already pressed in. As for the brake lines get the spl ones. They are like $70 front and $80 rear and there awsome. GET THE Z32 master!!! Very important, ESPICALLY if you have all z brakes. You can sometimes get away with the front only and stock MC (even though you will have a mushy pedal), but with all Z brakes you will not only have a very mushy pedal, but also terrible split point, and you will most likely lock up the rears under hard braking because the master cyinder is sending so much flid to the front and it will think that the rear needs as much pressure also or something like that. If any of this is wrong be sure to correct me, but I'm like 90% sure that this is right.