* Engine Mounts: The Ranger's frame isn't designed for a V8's size and weight, so custom engine mounts will be necessary.
* Transmission: The stock transmission likely won't handle the V8's power and torque. A stronger transmission, possibly from a larger Ford truck, will be needed, along with a custom driveshaft.
* Exhaust System: A completely custom exhaust system will be required.
* Cooling System: A V8 generates significantly more heat than the Ranger's original engine. A larger radiator and potentially upgraded cooling fans will be necessary.
* Wiring Harness: Integrating the V8's electrical system with the Ranger's will require significant rewiring or a custom harness.
* Computer/ECU: The stock Ranger ECU won't be compatible. You'll need a standalone engine management system or a heavily modified ECU.
* Axles and Drivetrain: The existing axles and differentials may not be strong enough to handle the increased torque. Upgrades might be needed.
* Brakes: Upgraded brakes are almost certainly needed for safety.
* Body Modifications: Depending on the chosen V8, you may need to modify the engine bay, firewall, or even the hood to accommodate the larger engine.
In short, while it *can* be done, it's a major project requiring advanced mechanical skills, specialized tools, and a substantial budget. It's not a weekend project, and professional help is highly recommended. You're essentially building a custom vehicle.