Finally my replacement axle shaft/half shaft and LSD arrived. Had to source another LSD for i wash't able to find a Kouki shaft so i had to compromise with Zenki one, Which on top is Kouki shaft with 25mm diameter and at the side is Zenki shaft with 24mm diameter.

Left to right, Kouki 2-way clutch type LSD, Zenki 2-way clutch type LSD, Zenki mechanical LSD (2-way as well) 

a close look~ the Zenki mechanical LSD uses 4 springs to pre-tension the clutches. 

Parts waiting to be clean-ed, oil-ed and install into mango.