La Invasion De Los Muertos screams 1970s by the look of this lobby card. Zovek looks like he's channeling Billy Jack. Here's the lowdown from The Zombie Movie Encyclopedia by Peter Dendle:
There's no real explanation for the unhappy catastrophe afflicting the Mexican countryside–just a lot of talk of the mysteries of the cosmos and shots of a starry sky. Whatever's to blame, the dead return from their moldy coffins with blank stares and a thirst for murder. Congregating in large groups, they choke and maul their victims and then tip over the furniture for good measure…Most interestingly, these zombies have an unprecedented fetish for vehicles: they hover around a bulldozer, and make off with any car or truck the keys have been left in.