the 4.0 l v8 petrol and the 2.5 l i6 diesel engine were mated to either the r380 manual gearbox or the zf 4hp22 transmission, as used in the late classic range rover, 300 tdi, td5 or v8 discoverys. the 4.6 l v8 petrol engine was only mated to the zf 4hp24 transmission.