How do you put small block in Fiat spider?

To install a small block engine in a Fiat Spider, you will need to modify the engine bay to accommodate the larger engine size. This typically involves custom motor mounts, adjusting the transmission tunnel, and possibly modifying the exhaust system to fit. It's also crucial to ensure that the cooling system is adequate for the new engine and to update the wiring harness to match the new setup. Additionally, consider the vehicle's suspension and brakes to handle the increased power and weight.