condenser is mounted between the radiator and the grill, the evap is mounted under the dash right behind the glove box between the fan assembly and the heater box, the receiver dryer is located on the passenger side of the condenser. If the system has been left open the receiver dryer should be replaced as it will be saturated, I've heard of people drying them out in an oven but your better off replacing it, also if the compressor grenaded you going to have metal particles all through the system so it should be flushed