The Nite Ize minimag upgrade kit comes with a clicky tailcap, a bi-pin module and proprietary reflector.
I just cut the legs of the Yuji to get the same length as the Nite Ize module from the tip of the pins to the base of the LED bulb.
It gave the larger, longer Yuji the same position inside the reflector but being larger it casts more light sideways than the Nite Ize LED bulb. And using the supplied clicky allows one to pick the beam they prefer and leave it there.
I picked a position where the spot was as wide as possible with a 'donut hole' just ever so slightly visible so it now looks a lot brighter than the incan version (although it's not).
This morning I took a page from Scout24's playbook and built a Yuji'd R30.
Remove springs, taking note of where the pins are on your burnt SureFire bulb. The pins are epoxied to the module.
Once the old bulb is unfastened and pushed out, insert the Yuji and bend pins like the SureFire bulb had been. Reinstall springs and viola...
Note: one pin touches the outter spring and the other touches the inner spring.
Have fun.