It's a very easy swap tp do, really. Ot's right on top of the engine on the drivers side (USA) and has easy access. The engine uses an oil to water heat-exchanger not like you are thinking, and air to oil radiator.
S cooler on the left.
Here is is right on top of the engine.
I hope this helps you understand what is involved. You will have to drain down the cooling system a bit to make the swap and then refill abnd bleed.