Well, after looking at Ledcorp's Luxeon bulb, I went ahead and made mine own, and it works great! Cleaned out the glass from the bulb base, used 4 - 10 Ohm resitors twisted together with heatsrink on them, shoved and epoxy into base. Soldered three copper washers to resistor leads for small heatsink, file top flat, epoxy Luxeon to washers, made connections - it works. Can focus beam and everything.

Four 10 Ohm resistors (2.5Ohm) isn't enough, as it's drawing about 400ma and getting real hot. After a few minutes it gets ouchy hot. For this no-heatsink mod I'd recommend a 4 or 5 ohm resistor to lower heat........