... Do the Edison kits still use the original transmission?

Cause if not, it would be hilarious to do that to a clapped out van...

Looks like they replace the entire drivetrain. Some older Ford vans, like the 90s windstars, were built on small truck platforms, so you could probably do one. But I'm not sure they'd sell one to ya

Still would love to see it. The idea reminds me of farm truck https://okcfarmtruck.com/pages/about