And that's with a cast-iron V8! 1977 is the last model year of the first-generation Bronco. It isn't very big compared to current trucks; it is substantially smaller in every dimension than the new (2021) Ranger-based Bronco. It is also missing the structure required of modern vehicles and the big wheels and tires and piles of "creature comforts" expected by modern buyers.Weighs surprisingly only 3,495 pounds.
A useful reference for anyone who doesn't already have the specs:
Ford 3.03 or "Toploader" in this case) is amusing, but that's all you need for an EV (if you use a multi-speed transmission at all).