DR350. Upgrading electrics.
 

Hi All.
I'm interested to know if there is any way of increasing the output of the DR350 charging system. My model is the SEX. I'm thinking the only way will be to replace the stator with one of higher output, but where from? Is there anything off a different [COLOR=#22229c !important][COLOR=#22229c !important]bike[/COLOR][/COLOR] that will go straight on? Off one of the DR400 models perhaps? Also, can a larger capacity battery be fitted?
All ideas appreciated.

Geoff