I just inspected mine & the center line is as burdar describes but the large outer line shows no sign of ever having had a clamp on either end, I'm missing the OE smaller hose but to the best of my recollection there was no clamp on either end...A tidbit I just recalled is that these two hoses were held together by an approx. 1/2" wide piece of black tape just over the valve cover. The tape had the appearance of electrical tape but was not as flexible, that may have been from the heat it had been exposed to. I don't recall that my '73 had the black strap on the inner fender with the small hose passing through as in the pic.