Did you find one yet?
Usually you can search eBay for Hoover Quadraflex Powermatic and find one.
Any Hoover power nozzle with pig tail cord and raised button wand lock will fit that machine. Granted it can depend what model Hoover Dimension you have. Does your machine have a gas pump handle or standard?
The gas pump hoses used a T Shape plug adaper. Some with 2 prongs and others with 3 depending on the model. The ones with 3 prongs, simply split the headlight off from connection with the brush roll. They did that so that for certain models with a gas pump hose, you could turn off the brush roll switch and headlight stayed on.
The original Quadraflex PowerMatic for Dimension 1000 canisters had a foot pedal for brush roll control and that foot pedal left the headlight staying on as well so many Dimensions had the 2 prong, T shaped plug
Regardless, you can rewire any power nozzle with a T shaped plug to a flat 2 prong if it doesn't fit your hose Once rewired, any Windtunnel, PowerMax power nozzle you find would work as well
Here are some photos of what to look for.
