plum - golden drop wanted/ also cashew tree

 I have a greengage plum that needs a mate!  Needs a Golden drop plum
to pollinate, does anyone have a seedling /cutting for sale?

Also after cashew trees, want to try to grow in Sydney Bluemountains.

cheers!!


PS; also need hazelnuts as mine just makes empty shells - reading the
net I apparently need different varieties to cross pollinate to get any
pollination.