Will a Peugeot 206 1.4 gearbox fit into a Peugeot 307 1.6?

No, a Peugeot 206 1.4 gearbox is not compatible with a Peugeot 307 1.6. The two models have different engine configurations, transmission designs, and mounting points, making them unsuitable for direct interchangeability. It's essential to use a gearbox that matches the specific model and engine type for proper fit and functionality.