C12nz to C14nz engine swap - Whats needed?

[Graeme]

Found a c14nz cheap with low miles and my c12nz is still losing coolant somewhere despite changing nearly everything

So what bits do I and don't I need?

Thanks

[Graeme]

Just been to see the engine today and it has a coil pack and I've been told its immobiliesed, can anyone help please?