First attempts at replacing the stock electronics unit which will overheat and fail after upgrades to batteries and motors

I created a new video which has the final electronics box that I settled on but wanted to keep these for informational purposes.
New Video Title “Kids Ride On Electronics Upgrade 2 !!! FINALLY A WIN !!!”

I think I forgot to put this in the video but the temperature of the Mosfet was around 220F before the heatsink and fan and 110F after on the Mosfet and 160F on the board.
After the second fan was added the Mosfet is 100F and the board is around 100F as well. This is in 90F + heat.
I will measure again after the nest full run and update the description.