5mm bore 48 pitch pinions

Does anyone know if 48 pitch pinions can be bored out to 5mm? Or if the shaft on a neu 1506 could be turned down to 1/8? Here's the thing I need to finish my blizzard badly but the spur is 48 pitch. And I will not use anything but a neu or a basic 5300 and the basic 5300 is impossible to get my hands on.