* Motor Mounts: The mounting points for the engine are unlikely to align.
* Transmission: The Beretta likely has a different transmission that won't mate to the Blazer's transmission or transfer case.
* Wiring Harness: The engine wiring harness and computer are different and not compatible.
* Exhaust System: The exhaust system will need significant modification or replacement.
* Cooling System: The radiator and other cooling components might not be compatible.
While it *might* be *possible* with extensive fabrication and modifications, it's not a practical or straightforward swap. It would be a very major undertaking requiring significant mechanical skill and resources. It would be far easier and more cost-effective to find a compatible engine for the Blazer.