Lower Radiator Hose Question

68 shud have a cast iron water pump... Cast iron pumps have inlet hose on drivers side
70 and up are aluminum pumps, and their inlet hose is on the passanger side

U need a spring in lower hose, u can make one easy with a wire coat hanger, i jus wrap it over a pice of 1" pipe.. Ive always thought the more coils the better, less of a chance of hose collapsing