Speedo drive/sensor for a K3
 

I'm after a speedo sensor for a K3. Recently bought a K7 front end to replace the trashed K3 front and was aware of the difference in magnets after the K3 (8 polarities vs 4 I think), was hoping to take the magnets out the K3 sensor and pop them in the K7 sensor, but alas the K3 sensor is completely fridge-freezered. :(