>Someone will, because it's a useful form factor.

Definitely, and the old carborated beasts just work and can be fixed with minimal tools and ran off of just a few wires.

I've been enjoying watching a coworker resurrect his M715 Military Truck (basically a government J-Series truck from Kaiser/Jeep) with a fresh blueprint SBC and a mix mash of GM and aftermarket drive train parts.

It may be the least efficient truck I've ever ridden in, but it can reliably pull tree stumps out of the ground.