what other gearbox will fit my ducar 125cc

[LickMe125]

i have a ducar 125cc DJ154FMI and was wondering if there were any other gearboxes that would fit it, i cant find another motor for spares anywhere and no one sells the gearboxes anymore. any help would be much appreciated. cheers

 

[sean01]

match the countershaft size and go from there.. im having a blonde moment and cant remember if there the same as lifan or yx 125..