Fresh engine out of a Pontiac Fiero 2.5l 4 cylinder std and was wondering what other vehicles take the same for swap future project Terry?

The Pontiac Fiero 2.5L Iron Duke engine (a variation of the Chevrolet Iron Duke) isn't known for a lot of direct swap compatibility. While it's a relatively simple engine, its mounting points and ancillary components (like the alternator, power steering pump, etc.) aren't standardized across many other makes and models.

You'll find it shares some *parts* with other GM Iron Duke engines (found in various GM vehicles through the 80s and early 90s like some Cavaliers, Celtas, and even some early S-10s), but a complete direct swap is unlikely without significant fabrication and modification.

To find suitable swap candidates, you'd be better off looking at other 4-cylinder engines around the same displacement from the same era (late 70s-early 90s GM) rather than trying to force-fit the Fiero's Iron Duke. Consider focusing on finding a car where the donor engine is already easily removed and the engine bay will accommodate a similar-sized engine. Even then, you'll likely need to adjust mounts and potentially modify things like the wiring harness.