However, you can definitely do this swap. It will require sourcing individual components and assembling the conversion yourself. This means you'll need to find or fabricate:
* Engine Mounts: These will need to be custom-made or adapted from other swaps. You'll likely need to weld or otherwise attach these to the Fiero's chassis.
* Transmission Adapter: You'll need an adapter plate to mate the Ford engine to a suitable transmission (many options exist depending on your desired outcome). The Fiero's stock transmission likely won't work.
* Driveshaft: A custom driveshaft will almost certainly be needed to connect the transmission to the rear differential.
* Wiring Harness: You'll likely need to fabricate or significantly modify a wiring harness to integrate the Ford engine's electrical system with the Fiero's.
* Exhaust System: A custom exhaust system is a must.
* Cooling System: You may need to adapt or replace the existing cooling system to accommodate the Ford engine.
* Fuel System: The fuel system might require modifications or a complete replacement.
Essentially, this is a significant undertaking that requires mechanical expertise, fabrication skills, and a willingness to source parts from various suppliers. You'll likely spend a considerable amount of time researching, fabricating, and assembling the necessary components.
While there's no kit, numerous online forums and communities dedicated to Fiero modifications (and engine swaps in general) can provide invaluable information and support. Searching for "small block Ford Fiero swap" will uncover many discussions and potential solutions. Prepare for a challenging but potentially rewarding project.