Modular Building Set (OBJ) by Nobiax
He made it a bit of a pain to Download: not sure why. But if you can find your way to the download link in the description, get past the video you have to watch to get the secret code, you can get this great set! Nobiax, by the way, is that guy who makes increadible surface maps with texture, normal and displacement! Great stuff. This set includes those as well.