To give a hopefully more helpful answer than my first one--
There was a lot of game modding happening on this site from about 2000 to 2005, including a bunch of 3D modelers (and a couple abortive attempts at animation). But time ran its course (and a lot of games came out that were way easier to mod) so there's only a handful of people here at all. Last year we put out a
Final Level Pack that was the most game modding this site had seen in years. I'm not sure if anyone else here still does 3D art on a regular basis (except me).
Re: your project. I don't know what you're planning, but if you're new to game modding, starting with something "huge" is probably not going to get very far. I've been on 3 or 4 large teams doing huge projects, between 2002 and 2011, and all of them fizzled out. The amount of work is just too much for unpaid volunteers to follow through on--people inevitably lose interest and flake out before finishing the work they agreed to. It's much better, especially if you're new to modding, to start w/some small projects that you can finish yourself, and then finish them. That gives you something to point to later on if you're trying to convince people to work with you. If you DO need to assemble a team of 3D artists, there's places like
this and
this where you're a lot more likely to find success.
Lastly, if you're planning on doing your project in Jedi Knight...you probably won't be able to find anyone. There's a handful of people still modding it on
JKHub, but most people have moved on to other games or other hobbies. Most big amateur games projects are done in Unreal or Unity now.