6volt generator to 12 Volt

[russcc]

I have converted a 8BA 6 volt generator to 12 volts by using the original 6 volt armature and the later Ford 12V case/field coils & end plate. How can you go about converting the earlier 59 type 6 volt to 12 volts. This for a '40 coupe that was converted to 12V and has a alternator which is out of place on a stock '40. I know I could go back to 6 volts with the correct regulator, generator, replace bulbs and remove resistor, but I would prefer to retain the 12 volts if possible. Thank you Fordbarners. See you at Hershey. Weather is looking good for Tuesday & Wed. so far.