Nowhere. The Superstinger lamp has a much larger OD then the standard lamp, so it won't fit through the hole in the reflector (not even close), and the reflector has an o-ring seal, so if you drill it out, you lose the waterproof seal.
The larger lamp reduces the run time on the light considerably. You also get a better reflector with the superstinger, it is both larger, and more reflective.