What you need for the conversion. 3 Racing FGX parts
#FGX-107- Plastic Parts Part G For 3racing Sakura. contains 2 front upright - USD 5.91
#FGX-124 Heavy Duty Wheel Axle For 3racing Sakura FGX - the shaft - USD 5.06
#BS-FGX/V1 Ball Bearing Set For 3racing Sakura FGX - or 4 QTY of 850 ball bearings (i think :-)
FGX Front knuckle is a direct fit to the DT-02 'C' Hub. But you would need to file/cut away a little excess for the Knuckle arm to have a better turning angle.
Options for Brake Disk #FGX-301/RE - Brake Disk Set For 3racing Sakura FGX
If you liked those pictures, you should see these...
The Grand Tour - Beach Buggy