This won't sell; people will just buy a crashed EV for 1/10th the cost and salvage the motor and battery. This is more of an insult than a product. It reeks of "you're not qualified to work on our premium electrons until you pay $10k and pass our one-day eCourse"
The motor package from a Leaf is about 90kg so probably in the same ballpark as the fuel tank, rear axle, and gearbox. You'd then need to get a lighter battery because a Leaf's battery is about 350kg, or twice the weight of an MX5's engine.
There would be a lot of surgery involved on the back end but since it's a subframe with the diff in the middle you're halfway there.
And for once, the project car's totally rotten boot floor won't be a problem because you're cutting all that away anyway!
Meanwhile, Ford has been selling the Mach-E motor as a crate motor for years; but it's useless, because they sell nothing else for it. No battery pack, no controller, no regenerative brakes. Pretty much a PR sham. Why bother?
I have a Mustang with a half-disassembled engine that needs major work, so I thought hey this might be cool. Nope.
We also had to bring over all the emission EVAP stuff, for the evap on the RSX tank (plastic irrc) we bought a new EG tank and welded all the necessary fittings to get it to work.
Very engaging car to drive.
Note in the eCrate link it's explicitly claimed to be legal when done correctly.
I have done several EV conversions using parts as you describe and there is a healthy amount of reverse engineering, defeating or replicating functions you didnt think of until it doesnt work right with modules that are expecting other modules to exist on the bus that no longer exist, and a million other things.
That's fine for a personal hobby project, but that is a very, very, very small project. The target for this kind of product is conversion shops that want to be able to offer customers tight turnarounds on vanity EV conversions with warrantees. 10k is pretty minor on that kind of project, the lead time and integration complexity is way more important.
I'd rather that reality than the EV conversion hobby be plagued and slandered with "this guy bought official parts and his baby perished in the resulting home fire".
In so many markets manufacturers are antagonistic to repair and customization; project cars remains this wonderful little niche where DIY excellence is enabled and encouraged. That shouldn't end with ICEs.
We have hobbyist mechanics out here taking their engine blocks to the machinist, rebuilding hydraulic automatic transmissions on the workbench, not to mention safely handling literal buckets of combustibles. They'll be fine.
