Joel is correct, all 70's should have the 5 port washer. Early 71's including up to 6271 (which is my car) probably also have the 5 port washer with 2 of the ports no being used (a hose between them). They also have the hoses running to where the headlamp washers would be but are cut off towards the front of the car because 71 did not have the washers. I believe they used up all the 5 ports and hose kits and switched over to the 3 port after that.