1970s and 1980s Japanese Super Silhouettes

[NaBUru38]

Hi, folks! I'm trying to find some information about the Japanese Super Silhouettes from the 1970s and early 1980s,

The English Wikipedia article that mentions it is JTCC, but that text is confusing and that's not the actual name of the championship.

Now, the Japanese Wikipedia on silhouettes has a section on it. Apparently it was held as a support series to the Fuji Grand Champion Series from 1979 to 1983. It had works entries by Nissan, Toyota and Mazda, and drivers such as Kazuyoshi Hoshino. But Google Translate is still very bad, so I can't read the article properly.

I've seen a few pictures and videos. But I'd love to find a list of entries, results, and information on how much professional and popular it was. Thanks!