https://www.londonelectriccars.com/
I like the way these people convert classic cars, the Minor for example can be converted back to ICE very easy if needed. The motor was bolted to the gearbox via an adaptor to keep things simple as it does not actually need the G/B.
Batteries were spread over the car to aid weight distribution, some where the fuel tank used to be.. all in all a very practical solution.
https://www.electricclassiccars.co.uk/
This company is very professional and the one i spoke to a lot when I was considering a conversion... they do some lovely conversions with considerable power if requested. And again i believe they can be converted back if needed. As one car was a 308 Ferrari and i can imagine in the future the genuine V8 in the car would make it more valuable, but there again you never know !
I would have loved to go ahead but the evil problem of cost got in the way.. one day perhaps.
So i'm really looking forward to see how this conversion progresses. I would personally keep it as simple as possible