Practical question (Score 1)

I'm somewhat serious about building one of these boxes myself.

I have to buy a lot of little parts from a multitude of vendors, fine. A small premium to pay over their quoted price.

My question falls to: where the heck do I buy a "Chyang Fun Industry (CFI Group) CFI-B53PM 5 Port Backplane (SiI3726)"?

Spend a few minutes and try and find that part for sale.

--frustrated--