Thermostat gasket leaking AGAIN!!!!

So I saw this on a small block page on FB. Has anyone else tried this thermostat? I ordered and planning to try it in the next week. View attachment 1716278119
The Chevy seal/thermostat will only work on late LAs ('78-'79ish and up) and Magnum engines. The earlier engines have a larger diameter T-stat and housing.