If there are Sandgropers looking for parts for 156 and 159, PerthWreck Auto in Wangara (8 Action Place) is wrecking a black manual 156 TS and two 159s (don't know the engine/trans sorry) - all cars are black.
I bought myself a grille on Friday from the 156 (which was advertised on Marketplace) and spotted the two 159s in the yard. They also have a 147, Giulietta and MiTo in the yard they are wrecking, so seem to be a bit of a specialist.
I only mention it as it seems to be very hard to find wreckers that are parting 156s and 159s in Perth.
Friendly and helpful staff, reasonable prices. I'd use them again.