you would need compressor, reciever/dryer, condensor, new heater box, lines, electric fan?, and then wiring for switch, cooling fans, low pressure switch, etc. all a/c systems must use r134a refrigerant and needs to be charged by a shop with an a/c machine. if you can get all the parts out of a used vehicle that would be best because buying it all new would be pricey $$$$$. most a/c systems from that year were dealer installed so it shouldn't be too hard to remove all the components from a vehicle with it. good luck
derek