This axle uses HSP 02024 DIFF and 02030 pinion. If you want to lock the diff you may use Axial's AX30500 heavy duty locker.
You need 6x 6700 bearing and 2x MR105 bearing. To keep it together use 7x M3 bolts (10mm) and nuts.
Input shaft to pinion must be metal, this axle will not work with the original 3d printed input shafts. This is the only restriction, al else can be stock.
EDIT: added housing with 2mm better ground clearance.