actually, sorry to say it, but the LumensFactory D36 lamps will only fit in 3 lights that I am aware of:
The Wolf-Eyes M90 series
The Pila GL4 series
and the FiveMega custom found here:
http://www.candlepowerforums.com/vb/showthread.php?t=190517
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The LF versions of the D36 lamps have a bit more girth at the bottom of the lamp assembly, and will not fit inside of the smaller heads of the 9 series wolf-eyes hosts, sorry.
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With that in mind, if you're ok with a "standard" output lamp, and like the nice balance of output and runtime that can be had with the regular wolf-eyes D36 9V assembly, then there is nothing wrong with just using that lamp, and it could always be swapped for a D36 wolf-eyes LED module for greater flexibility.
Eric