Yes,
Appliance made D Spokes, but there is still no evidence that anyone other than American Racing made a specific Porsche bolt circle and offset.

Keep in mind that Appliance wheels had visual differences. 1) the chamfer from the rim to the spokes was steeper than Americans and 2) the lug holes were countersunk quite a bit deeper than Americans

Until I see a catalog, print ad or some other form of evidence, I am going to stick with my gut that only American tooled up and built this unique offset and bolt circle for the Porsche application