If you have a motorcycle shop in town, you could have them redo the front cable and keep the original fittings. Apparently they're equipped to solder new cable ends.

The other solution is to use a normal inner brake cable and a combination of spoke nipple (matches the cable end profile more or less) and a cable knarp (I think a cantilever straddle hanger can work in a pinch) to secure the brake end of the cable.