Page where you download latest stable WinUAE have it.
http://www.winuae.net/download/
Link "[PPC CPU core plugin, WinUAE 3.0 or later]" on that page.
EDIT: That is for first link that DamienD posted in previous message.
Both are (from
www.winuae.net and fs-uae.net) version 2.2.0.0 but different sizes (comparing 32 bit with 32 bit and 64 bit with 64 bit of course).