[cricketo]

If your wondering why you'd convert a nearly new car its because currently electric cars are so expensive would it make sense to do a DIY conversion on a nearly new car?

You should look at the cost of the basic components, including the battery. It's unlikely you can make your own EV significantly cheaper than a factory made BEV, especially used one. Perhaps in the UK it's different, but in the US before the pandemic you could find Fiat 500e for $4000-5000, likewise with older Leafs. Plenty of newer Leafs were going under $10,000. For comparison, I recently bought a new AC23 motor with a Curtis controller from a distributor, it was about $3,000.