For an M3, you will need a 12V D26 series lamp assembly.
The M3's lamp is separate from its refelector, and not part of the D26 family of lamp assemblies.
thanks for the help guys! one last question, which bulb would work with the added cell extender and a turbohead on the m3 and where would i buy this bulb at? im a bit confused with the whole D26 series. thanks again.