Check out mountain Electronic.com, Look at there Convoy line of flashlights . Almost the same as your cree light, I can order it and turn a sink and focus adapter prewired to drop in your diode driver module . PM me if interested, Sinks are made of AL, AL/CU core ,Full CU. Depends what you put in it.
Yep, I've been looking around everywhere too, and can't find that exact host; I've been to DX, Fasttech, Kaidomain, and Mountain, still no luck.
Unless someone has some old stock on the shelf, you may have to settle for something real similar.