Or, if you're too lazy to search them, here you go:
contachou1_lae2.txd - CJ's house in Ganton. oldgarage_sfse.txd - CJ's garage in Doherty. carshow_sfse.txd - Wang cars. You can find these files in gta3.img located in "#gtaroot#/models" folder. You can open gta3.img or any other .img file with IMG Tool 2.0
But don't expect this from all users, you have to do searchings by yourself. Good luck out there.
This post has been edited by ilir on Sunday, Sep 2 2012, 11:28