You're going to need new spokes mate, unless you get hold of another american classic that is. The spokes will most likely be a different length to any other hub and even if they are the perfect length, the chances are they've stretched to that length anyway. It's quite easy buying a front disk hub nowadays. You don't tend to get too much stress going through them (unlike rear hubs). I would just go for something cheap, a deng hub will be fine.