Parts you can use:
Front:
S14 hubs + spindle + control arm + ball joint
Plug and play aftermarket conversion (Ichiba hubs etc.)
Rear:
S14
N/A Z32 (TT has too many splines)
R32
I've heard R33 but can't confirm
Aftermarket Conversions
Front Axle Nut: 30mm (1 3/16")
Rear Axle Nut: 36mm (1 3/8")
Cotter pins: (2x) 3/16 x 1-3/4 for the rear, I don't remember the front it was a while ago, probably the same?
For the front, if you're using a conversion you just pop off the hub cap. Remove the cotter pin, and undo the axle nut. Slide off slide on.
For the rear you need to disconnect the upright. S13 balljoints are pressed into the LCA, so you're better off taking the LCA out attached to the spindle.
I believe all the bolts on the rear multilink are 19mm. The stabilizer bar connects to the LCA by a 12mm nut. The bolts that hold the hub into the knuckle are either 19mm or 17mm. Oh and of course you have to take the calipers off (19mm bolts).
That about covers it. If you have a question, feel free to ask.
I'm sure there'll be the cynics, and yes this doesn't really need a write-up; but hopefully it'll cut down on the threads every week. If you don't like it, fuck you.