As far as I have seen, they are not reproduced. I've read in the past where some convertible owners adapted other makes tack strips. I've never done it myself. Maybe contact these companies and get their tack strip measurements. See if you can make them work.
https://www.npdlink.com/product/tack-strip-kit-convertible-top/145715
https://chevelle.com/1968-1969-1970-chevelle-convertible-top-tack-strip-3-pcs/
https://www.ecklers.com/body-compon...rtible-top-tack-strips-and-hardware.html
https://www.ebay.com/itm/200831936810
Please share any info you find out.
Terry W.