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Seems to be a billion different ones , used these with good results from 68-76 moldings on the caddy's . Might fit others, you can pop rivet them on or use screws. These replacement studs work well also .
https://ssl.corvair.com//user-cgi/search.cgi?part=C7708R$ 10.75 @ when you buy 4 or more. They were used on the Chevrolet Corvair in 1964, and these were reproduced using a NOS unit as the example. They are gold iridite plated.