After finding the clips that are available are junk I modeled my own and now have them on Shapeways to buy. I have no markup and no guarantee but they are working great for me. I would get the finer (Premium) finish ones. These will grab and hold
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Convertible Top Latch (1963-1966 Dart, Valiant) by fbfdc26 on Shapeways
you will need a one 1/8” x 1/4” and one 1/8” x 1/2” rivet for each.
Material
Printing Versatile Plastic - Shapeways