A kl3 modded with a cree would work.
The 6P is a pretty briight flashlight especially if you use a p61 Globe. Asking for more from an emitter is asking a lot, still.
G&P I beleive came up with a LUX V conversion, maybe the same thing can be done with a Cree. You would have to regulate it.
Get some grees and a few drivers and shuve them into a KL3 head and have fum playing. I am sure sombody has done it by now.
Good luck.
Yaesumofo