Empty Headphone Housing?

So I had an old pair of high fidelity over ear monitors, and their housing had degraded.

So I've disassembled them and would like to know where I can buy empty headphones, no speakers, but decent quality housing. so I can install the drivers and my own wiring, insulation and ear-cups.

Buy earmuffs,

They can go for as little as $10. It'll take some finesse when drilling and gluing, but if you can pull it off it would be an awesome salvage gadget. There's also headphone headband pads and earpads you can buy to further costumize it for comfort.

The housing will affect the sound of the headphones, so each pair of headphones will have a specifically made housing. Keep that in mind. That said, you can ghetto rig it to something like posted above if you felt like it.