Quote: " I desperately need of the Core Pack #1 made by Darkfact and Underside, but Ice Cube seems to have completly revamped his website, thus removing all the old downloads."
We have this pack.
Quote: "So, someone who had permission in the past to host it, like Templar or XPlosys would be kind enough to re-upload it somewhere, please ?"
You will need to obtain permission from the creator to have someone redistribute their media. If you can obtain said permission, we may be willing to help you.

There's no problem that can't be solved without applying a little scripting.