Two thing to be careful of guys:
-that stator is delicate. -the mounting holes are keyed.  One mounting hole is offset, so the stator can only be mounted one way.  The wires come out one side, and that side MUST go against the PSRU.

I went to a local motorcycle repairman and got him to give me a damaged unit that I could use as a template for drilling holes and such.  I cut a chunk of aluminum down in the lathe.  The ID I made a push fit over the PSRU input shaft.  The OD of a step I made a tight fit for the stator (once you remove the wires, the stator breaks apart into sheets).  I used one of the stator sheets to locate the drill locations for the mounting screws.

The parts are a standard size.  I suggest that if you are considering this, that you visit your local Harley repairman, and ask what he's got in his trash bin.  I've got the rotor housing (a truly heavy chunk of steel) and the stator "sheets" if anyone would care to have them.

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