If anyone remembers the story Nvidia Releases Free Sidrial Quake III MOD then this is good news for all fans. The team behind this mod seems to have updated their mod back in April 2002 to Sidrial TC 1.1 with the winning levels of the Sidrial map building contest. The mod was first released by Nvidia back in January 2002. Here's a screenshot from the mod. I know it's a bit late but hey this mod is cool and you can't beat FREE.
Download Sidrial TC 1.1 upgrade with the winning levels of the Sidrial map building contest
Download Sidrial TC 1.1 upgrade with the winning levels of the Sidrial map building contest