I found lenses on Amazon that work as replacements for Pantera door lamps. Amazon delivered 12 side markers lights for $7.99, and the side markers can be sawed off and fit nicely in the Pantera door lamp housing. Below is a picture of a door lamp before and after. The rivets on the original housing can be readily drilled out. Here is the link to Amazon as well.
https://www.amazon.com/gp/prod...00?ie=UTF8&psc=1
The picture below shows an original lens on the left, a sawed off lens in the middle, and a donor side marker on the right.
Here are some of what Amazon sent. I have extra pairs for free if anyone local wants them.