This is ONLY the skin. I DID NOT upload the model because I don't have permission from the owner to upload it.
Installation:
1. Open gta3.img (with IMG Tool or something else) in your /models folder.
2. Find at400.txd and replace it with the one you downloaded.
3. Rebuild the Archive and then your all done.
4. Have Fun!(:
I made this skin with:
Microsoft Paint
Picnik
SumoPaint 2.0