A1 wowtac xhp70.2???

Noooo.

What you want is this:
http://kaidomain.com/p/S026927.KDLITKER-C8_2-Cree-XHP50_2-White-6500K-2600-Lumens-5-Mode-LED-Flashlight-Black

Then swap it out with this monster while drilling the center of the reflector a bit:

http://kaidomain.com/p/S027211.Cree-XHP70_2-Neutral-White-4000K-LED-Emitter-with-20mm-x-1_5mm-DTP-Copper-MCPCB-6V

Stock, with the XHP70.2, since it is more efficient than the XHP50.2, instead of getting 2000 tested lumens, you will be getting 2800 lumens already!

Now, you can even modifiy the driver to put out even more current by replacing a single resistor!

See this thread for more info:

By pushing to a max output of 4A, or even 4.5A at 6V, you could be pushing almost 4000 lumens!