Not trying to thread jack, but FYI I'm in the market for a similar thing and I think if you're looking for a generic SS tower it'll be hard to come by used for a fantastic price.... The ones Danaldor is selling here are sexy if you're looking to drop a little extra coin.
I saw a two tapper, generic SS, go for 53+17 shipping on fleabay yesterday with no cap (which run 18+shipping.) IMO, this is the best deal you can get (no affiliation)- pick up some threaded outputs (no affiliation) and you're in freakin' business. This is the route I'm considering... unless danalor wants to cut me a (better than it already is) deal on that sweet Keith's tower