I have a '70 unit with the single hole base plate, but, you will need to tailor the rod to work with your set-up. It's n.o.s. Buick part - I think for a two barrel. Let me know if interested and I can post a picture or two.
Did you see other post where a 69 was wanted, assuming the one the OP here wanted was that 70 unit? https://www.v8buick.com/index.php?threads/divorced-choke-thermostat.389162/