Tamiya Rising Fighter Upper Body / Spoiler Mount (Part D3)

So my son's Tamiya Rising Fighter lost out in a bike vs. rc car collision and cracked the part where the upper body and spoiler mount to the chassis (part D3). Tried to get a replacement but was not available anywhere (Tamiya or online) except in the UK. So I did my best to design a replacement in Tinkercad.

Not sure if this is a common part to break on the Rising Fighter as this broke as a result of a kind of a strange accident rather than normal bashing. However, I thought I would post