Picard; Welcome! You will find the Forums a friendly, if sometimes confusing place to be, and interesting!
My opinion is that depending on what you want to do, it may not be the best solution to put a Lux V in a Mini Mag--sort of like shoeorning a small block Chevy into one of the BMW Mini Coopers. It would do well on the salt flats, but around town?
Buy an MJ cut down LED from the Sandwich Shoppe, and a mineral glass lens, and install that in your Mini Mag. All it takes is drilling the reflector, and the Shoppe may even have one pre-drilled. Cut the wire legs on the LED to proper length, being careful you don't snip too much, screw it back to gether and VOILA! A very bright MINI MAG. And the Shoppe has a variety of strange and wonderful modifications for lights.
The Opalec Newbeam is also a good solution, as are the other replacement bulbs for the MM... but, I found the MJLED, and never looked back! Totally happy with the "new " MM, but my wife confiscated it for her EDC light. If you enter here, keep a firm grip on your wallet! /ubbthreads/images/graemlins/smile.gif