If you loved Stacy: Attack of the Schoolgirl Zombies, try Rape Zombie: Lust of the Dead 2
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Stacy: Attack of the Schoolgirl Zombies

Rape Zombie: Lust of the Dead 2
What they share
Both films are directed by Naoyuki Tomomatsu, and they both carry the 3am cult, unhinged mood tags, and they sit in Comedy / Horror territory. If that's the register that drew you to Stacy: Attack of the Schoolgirl Zombies, the second film will land in a comparable space — through a different lens.
What Rape Zombie: Lust of the Dead 2 is
Ruined Tokyo, late summer, the whir of helicopter blades. A global plague transforms men into sex-starved undead, leaving only desperate bands of women to fend for themselves. Some few uninfected men still exist, though their motives are far from pure. Tomomatsu's zombieverse is not for the faint of heart.