Is there any particular reason you're averted to having the crank ground to a standard number like 020 or 030? That would be a standardized oversize and bearings are readily available in those sizes.
No I was just looking to keep it near stock size, I plan on running a whipple charger and i'm not quite sure what kind of stress that could put on the crank or bearings. I would like to keep it from spinning a bearing or cracking something...