Well, I never did find out the power output of the B4's stator, but I tried a diff. regulator anyway. I bought a regulator from an '04 GS500f off of eBay. So far it is working. Wiring and mounting holes are the same.... doesn't seem to get too hot, but I may wire up a couple running lights, etc, just to keep the load down on it until my official B4 regulator comes in.