Dreämy from Drunkard’s Regalia has made up an incredible looking steampunk hunter transmog set! She even goes so far as to include a list of matching pets with the look, simply genius! It almost makes me want to race change to undead, because the over all look is just so perfect.
Although it will require a bit of farming for a few of the pieces, and you may need to substitute in something for the engineering goggles, the vast majority of the pieces are BOEs. You should be able to get most of this set together without even leaving Orgrimmar (or Stormwind, if you’re one of THOSE people).
If you do struggle to find one of the pieces, following the theme of copper/bronze coloured metal and dark brown leather should keep the look consistent. There is a great add on called MogIt which you might find useful for searching for alternate pieces.
Dreämy has done a similar look for clothies, which is also stunning.