Old (non-gas-charged) red Konis are scarce (stock on Gr-3s), but Pantera shop owner Pat Mical in Massachusetts used to rebuild black adjustable Ariston shocks stock on some '71 pre-L's & built by Koni in the '70s. He replaces seals, fluid and threads the steel bodies for adjustable Koni spring perches. No difference but the paint. He may have one or more in stock. Try <firstname.lastname@example.org> Some of the usual Pantera vendors also have them occasionally.