After much searching I found these flashlights:
I've wanted to mount a shiney flashlight to my front rack for a while, but they're hard to find. These are all metal and glass so should take to an led conversion well. I picked up a couple 1" pipe hangers from the hardware store. I bent the bottom tab of the hanger to wrap around the flashlight, and screwed it to my VO front rack with a couple 5mm hex heads. It sit well and seems quit sturdy.