you will need to wire it up install the two temp sensors, digital pannel and also a climate control heater core. The heater core will require the whole dash ripped out so unsless you do it yourself then your up for alot of labour costs
but it isnt that hard to do yourself but like everything it takes time
the cluster comes out easy you dont have to remove the whole dash for that. i think he means the whole thing which i have tried before and unless u know exactly what u are doing it will end up being a long job but a good learning curve.