Here is an original mounting clip. There are 5 of these along the rocker panel, 1 in the front fender and 1 in the rear quarter. There are also 2 small phillips stainless screws, 1 on each far end, to hold the molding from moving along the clips. I got these clips from a fellow in Canada via this forum
I do not know that they are being reproduced. If you can't get clips, you can always revert to screws.