They sold kits to swap out Jaguar motors with Chevy 350’s and Turbo 400 trans, I’m sure there will be an EV swap soon
The EPA will step in with monstrous fines. Not long ago they were prosecuting companies that made diesel mods and fining them millions. Even little guys were getting hammered by the feds. I guaranty that you had better not touch their holy grail and modify one in any way. It sure would be fun though.
I can see someone like “Roadster Shop” build a chassis/pan to convert a Tesla.
You can put a 350 V8 and THM400 in virtually any ICE car, with just a little ingenuity and some sweat. You can’t fit them in ANY EV, they’re too big. There’s no place for a gas tank, either, the batteries are in the way.