If you do a search on the GAC02-004 part # from the EBAY listing and visible in the picture above, you can find several several sources that indicate that these work for the 5th gens.
https://www.driveshaftparts.com/inde...roduct_id=4516
https://www.powertrainindustries.com...make=Chevrolet
It also appears that these work with several Dodge/Chrysler V8's that seem to be easily sourced.
A little more digging will turn up some dimensions for the Dodge/Chrysler for comparison
https://www.dormanproducts.com/p-65026-935-601.aspx