Nissan Patrol 4x4 (Africa)

Do you need to change the gearbox and transfer case as well from the 3l to the 4.2l. The reason why I want to know is that I am looking for a very reliable engine that does not need to be performance driven to tow a horsebox. I don't want to sit and worry when my wife drives the vehicle with the hor...

Is it sensible to convert a 3l diesel to a 4.2 diesel engine?

Is it a 7 seater?