

There’s a lot of EV kits and also people converting petrol cars for a living, f.e. this little beetle:
https://youtu.be/kYmMrMEwl94?t=282
Just search for <Car maker> <Car model> <Car model year> EV Conversion Kit and you’ll find a lot of hits such as the first hit on duckduckgo for VW Golf 2005 EV Conversion Kit that may be bought with or without installation:
https://ev-evolution.eu/solution/volkswagen-golf-ev-conversion-kit/
Pfft, why argue the name of donut holes when you can create a trinut?