Yes the half shafts are to suit the R180 diffs. $20 each? Yes my car had a R200 so they are probably not much use for most of you.
I don't have a R200 anymore but I do have a diff guard (6mm alloy bash plate) to suit. I guess it will also fit a R180. I was pondering making some CV's so I have a skyline doner shafts that need the be shortened too.
Interior trim, I think I have a heater box, Windscreen demister grill (seen in photo) a couple of different gearstick boots (possibly not from z cars) Pedal boxes, steering wheel (poor), scuff panels (in photo).
A box full of rubber parts, another full of bolts, rodends, knuckles, tierods and stuff, a wiring diagram for a 280z (not ZX) enlarged to A1 and laminated. 3x fuel injection manifolds (one was the turbo version), and a bit of a glove box.