Gleb, thanks for responding (in a private email) regarding this issue. Here is the gist of our discussion, and Gleb's response:

Hi Mike,

Do you know if an official tar.bz2 is going to come to Source Forge, anytime soon, please?

This download link: https://sourceforge.net/projects/scst/ still
downloads scst-3.5.0.tar.bz

The SCST has moved to the GitHub since December 2021.
You can find the latest release there https://github.com/SCST-project/scst/releases/tag/v3.6

You can also find the actual information about the SCST releases on the official site http://scst.sourceforge.net/downloads.html (Download released versions button)

Thanks,

Gleb.

I will create my own tar.bz2 to use since we require it in that format. Thanks so much for your prompt respond and you may consider this ticket resolved.