If the OP needs the chrome trim pieces and not the rubber sweeps, theres lots of decent used ones that pop up on ebay or other online sellers. Ive sold numerous pairs of nice used ones for $100 or less.
Heres pics you can actually see that shows the different styles of window sweeps & trim...
https://www.secondgengraveyard.com/t...itle-two-frlkm
Used ones...
https://www.ebay.com/itm/29763659358...Bk9SR4ig-_LLZg
https://www.ebay.com/itm/25662775815...T5H4JD9MWQHNVX
https://www.firebirdcentral.com/1970...we_TpPoPS3KxC1
Or they make them new repro...
https://www.ebay.com/itm/35276492561....c101506.m1851
https://www.camarocentral.com/1970_1...olIhGBdDpzQrBp