Installation time would vary depending on the state of the car. Meaning if your car is in the midst of a restoration and you are in the process of reassembly things would already be out of the way which would make the wiring less time consuming. If you were to start with a complete car you would need to remove interior and other items to run the new wiring and grounds to the rear. So time would vary on a vehicle to vehicle basis. For a car that is assembled it would be a good day to day and half job.
