Do you have more info about retrofitting classic cars with EV technology? This is a very neat concept, but I’ve not got the best Google-fu to break into this domain, it seems.
It's rather interesting from a hacker point of view -- these guys are analyzing the CAN bus signals and checking components with oscilloscopes, then building their own circuit boards to connect and manage the various batteries, inverters, and motors. Check out:
https://www.instagram.com/teslified_e30/
https://www.instagram.com/tesla_bimmer/
Disclaimer: I'm an E30 owner myself.
e.g: http://ev-torque.com.au/ https://www.evmachina.com/ https://www.ozdiyelectricvehicles.com/ https://www.evclassic.com.au/