It's a KIT! It's just a pile of parts that you'll have to assemble, adjust, test, tweak, and it all requires you to put all this on your old monitor frame.
Just call Happ Controls (1-888-BUY-HAPP) and order monitor # 49-1329-VP2 for $149. I just installed one in a Ms.Pacman last week. Only took a few minutes to do it.