TAMIYA TA02 original Carbon plate kit.
Next Step is DIY a Carbon Chassis & upper deck to use 416/417 Rear Suspension
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Then, The car just look like FF03,haha...
If you have both 416 Frt Suspension arm and FF01 Chassis, just measure the width of that conection, only widder 1mm, so ,just remove some material of 416 arm, then you can use it!
Use the original PIN is fine.
About the upper link, also use the original hole on the shock tower