I'm actually in the process of setting one up. I'll give you a crappy cell phone pic of it, that I took before I bought it. The only thing I've seen so far that would be handy. Is make sure it has enough filration holes. Mine only has two HoB cutouts, and 2 intake/return line holes.... So if I was to use 1 canister filter, my intake and return line would be very far apart.... So I recommend, getting it drilled as if, it was 2 seperate tanks, put together as one... So you have 4 holes for canister filters instead of 2.
This cost me 500 used.