1970 duster heater hoses

my question: is there suppose to be an inner fender well clamp that holds heater hose's in place or do the just lay there and if so does anyone know who sells them. I do have the two aluminum straps that go on them already! Also if a clamp is used I do not see any hole to use on top of inner fender?

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I have seen 3 different ones, an inner fender top, a shock bolt mount and a tall one on intake or head bolt. Don't know about correctness but all would work. I would think classic or year one and my favorite - eBay would have them