If you want to, go into the Finder's 'MENU' resources # 5 and 15, and make sure it is "Empty Trash".  Then open up the 'STR#' # 128 and make sure the fifth text field to "Trash"

Open ResEdit.  Open the file of the icons you want, and the Finder.  Copy the 'ICN#' resource and paste it into the Finder