Ive just fitted my rebuilt gearbox with an uprated "ricardo" atb differential, got everything back together and the driveshafts don't fit in the diff. They are too small and the teeth don't interlock. So does anyone know what inner CV joints have bigger teeth than the stock ones?
The usual inner cv's measure 25mm across the teeth, i need 28mm ones...

Help please got a rolling road day soon and ford fair next weekend!