"the filling station" vendor bought up the extras from a 'bolter who had new ones made to the dimensions of the original clips. i bought these a couple of years to use on my truck (see my signature for pics) and they worked perfectly in combination with the layout drawing Bill posted above. I compared these clips with the 'ordinary' repro clips and they are
very different. i suggest you call the to see if they are still available.
Filling Station