Without knowing anything about that exact generator I'll just say sure, of course it is possible. Is it easy or cost effective, heck if I know. But as long as you have a housing and a rotating shaft you can build an alternator.
If you're asking if there is a drop in conversion kit then I'm sure the answer is no.
My link is a conversion kit that doesn’t require rewiring the armature. But I don’t know how well these work. Rewiring the arm would be fine if we could find someone that does it. Or of course finding someone that sells converted units, which I doubt that person exists.
Wondering what others have done about this...
