Why in the world would anyone do that? That's about as silly as putting a LED into a SL-20 or a Mag Charger; it fully defeats the intended purpose of the light as a far reaching high intensity light. Much as I prefer LED lights for many purposes, I would only use it if it were to increase the level and quality of light, such as the Mag LED Upgrades and Mini Mag LEDs. But putting a LED in any of the Stinger series would just reduce the output.
I'm sure this will make me unpopular, but I bought one of the drop in mods for my HP stinger.
Here are my observations so far:
The light runs for ever on the new LED. Part of it is the 3600mah battery from super-batteries and part of it is from the LED. After 11 hours I got tired of waiting for it to drop and shut if off. I think that is more than enough run time for me.
The light is very white, I know I should expect that. But not having to worry about the output and burning out is a big plus!
I think it has very good throw, maybe not as great at the ican, but more distance than I need most of the time.
I can try to capture some beam shots if you really think that it is not as nice with the mod, but I need to wait until it is warmer out and not snowing.
I'd be happy to answer questions if you have them.
By the way, I also bought one of the new LEDs for my 5c mag light. I leave that one in my truck all the time and it hardly ever gets used. But it made a huge differnce in the light quality and output.