So far I have been able to get my hands on 2 FQ's with a third on the way. The brown model is a D31X and the red one is the Majestic Triple Crown Model 99. They are complete with the power nozzles that came with the machines originally. I also have a 3rd power nozzle (a K88) that I was able to find at a local Vac Shack.
I have completely disassembled, cleaned oiled and reassembled the machines and they purr like kittens.