Ok, I'll bite. This is my take on a 2C LED Maglite. I finished it today using a whole bunch of spare parts I found in my flashlight drawer. I began with a pewter 2C Maglite, removed the bulb stem so the H22A CHS heatsink could fit in, wired up a Lowes TF 2C Cree boost driver, then sanded the top of the heatsink flat to mount a low-vF Q2 5A 16mm round board. Crees don't focus nicely in a Maglite reflector, so I trimmed the cam off, stripped the reflective finish off with Easy-Off oven cleaner, then dyed it black with RIT dye to make room for and serve as a backdrop for the optic. The optic is a 10 degree Khatod purchased from DX. The plastic window was replaced with a 52mm glass window from KD. Runs cool and looks unique. My previous conservative guess was around 120 OTF lumens, however current measurements show it's brighter than that...
Edit: I just took some measurements and did some quick calculations. Vbatt is 2.47V and current at the tailcap is 1.12 amps. Voltage across the LED is 3.12, and assuming a circuit efficiency of 80%, that would mean the LED sees 709mAh. Minimum flux of a neutral white Q2 XR-E is 87.4 lm/W, and assuming an optical efficiency of 80%, that would equate to just north of 140 OTF lumens running Accupower LSD C-cells that haven't been charged in over a year!
This is just the first of 3 2C Maglite mods I have planned for this week. When the parts arrive, one will sport a K2 TFFC and the other, a P7.