* Engine Mounting Points: The engine mounts and their placement on the chassis are likely different between the 1984 and 1992 models.
* Transmission Mounts: The transmission mounts and their positions will also likely differ, potentially requiring modifications.
* Engine and Transmission Compatibility: The engine and transmission from a 1984 Cavalier might not be compatible with the 1992 Cavalier's electronic controls (if applicable) and other components.
* Exhaust System: The exhaust system might not line up properly due to changes in the engine placement or design.
* Wiring Harness: The wiring harnesses for the engine and transmission are likely different, needing extensive rewiring.
Recommendation:
It's much easier and more reliable to source an engine and transmission from a similar-year Cavalier (1992 or close). This will ensure proper compatibility and minimize the need for extensive modifications.
Note:
If you're determined to use the older components, you'll need to consult with a mechanic experienced with both model years to assess the feasibility and potential modifications required. Be prepared for a significant amount of work and possible unforeseen challenges.