In our local craigslist for cars website someone has been selling a -84(or so) Nissan Sunny for ages with electric conversion. The seller did just that, took combustion engine out, attached a electric motor into transmission and the result is that you have 80’s car, with manual transmission and batteries so small that once you’re out of the driveway you’ve depleted 10% of the batteries (give or take, but that’s pretty much what you’ll get). And it had something like 15kW minus losses of the drive train.

But the parts are so expensive (at least for now) that listed price is almost 10k€. I can understand that seller wants their money back and it isn’t the most serious conversion out there, but the reality is that you’ll get a shitty 80’s car with a even shittier EV conversion (since the frame has it’s limits and high quality components are expensive) while you can sell a similar car with a combustion engine for 350€ on a good day and a tank full.