Warning, the following response is intended to be funny and should not be taken seriously at all
CandlePowerForums - Flashlights - Incandescent Flashlights
1. a link to a LED mod,
2. an LED mod suggestion
3. a complete LED light suggestion
4. another LED option mentioned
LOL...
I'm going to go over and try plugging some incan suggestions into the LED section of the forum real quick, this should be funny... come join me, it'll be fun!
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On a more serious note, the ROP is the easiest place to start with incandescent modifications. Pick up that 6D mag you had in mind, install 6 D size NIMH cells (I recommend the accupower brand low-self-discharge cells), install an aluminum reflector, glass lens, and buy a set of Pelican "Big D" SLA bulbs. With the 4D mag, you can also do a ROP mod, but will need to use less common size cells and a plastic pipe as a spacer to keep them steady within the mag body. Both the 4D and 6D can be used as hosts for much more serious modifications, requiring modifications to the mag switch, or complete switch replacement, in conjunction with battery adapters and NIMH cells, or li-ion cells of various types (D size, or ~26670)...
do some searches on information about the mag623 mod, I think a 4D host could be used with 12 high current AA cells pretty well
Eric