ABS Sensor Replacement - V6

[New S Wales 2010]

Does anyone know of an alternative ABS sensor that will fit a Bongo (1998 V6 ABS) ? There is nothing listed in the Club database but the Mazda originals are chokingly expensive - especially as this is now the second one to fail on my van ! As an alternative is it worth changing the whole hub for one off a broken vehicle, complete with ABS sensor attached? (I already know a sensor that is rusted in cannot be removed without breaking it, so changing the whole hub seems the only other option). How much work is involved and how much risk of hitting a problem? Any advice appreciated.

[Northern Bongolow]

have you had a meter on the end of the sensor wires and confirmed it is the sensor thats at fault, could it not just be the loom or the socket at the abs module.
replacing the hub is a straight forward job but check that its a good one first.