Those haven't been available for at least 10 years. Check the parts for sale section, there was a guy selling a brand new set there last winter??? He was wanting more than i would give. I search ebay and occasionally see a set there. I bought this set there a couple of years ago after a tree-branch fell on my car. If these hadn't been on there i am certain i would have needed a new rear hatch glass.
Crager made these back in the late 80s...they quit after the company was sold out around 91 or 92. They supplied them to GM with-out the Crager badge and were actually a dealership option through corporate at one point.
If you find a set DO NOT install them using the dbl sided tape! Use window weld with a good glass primer for the 4 center pieces (2 top and 2 bottom) and use just the window weld for the 2 edge peices...the last set i got on ebay didn't have the side pieces, so check to make certain all mounting pieces are included if you find them.