I use 'Pick Pay and Go' on Heatherdale road - Ringwood, but only because it's so close. Quite small compared to other wreckers, but relatively clean and they supply running water with Solvol and a towel for cleaning up.
Not much of a range for Datsuns, or Nissans for that matter. Usually have a couple of skylines (R31's), pintaras, bluebirds, some 180 and 200Bs and a Y or two. There was a 1200 coupe at the back a while ago, not sure how much of it is left.
I also like strolling through other makes to compare parts.