http://www.granturismo-3.com/

http://www.gamewinners.com/playstation2/GranTurismo3.htm

http://www.gran-turismo.com/

http://www.cheatcc.com/psx2/gt3as.html

http://www.granturismoworld.com/

http://en.wikipedia.org/wiki/Grand_Turismo

http://www.youtube.com/watch?v=_vZR7LNJqg8

http://www.consolecheatcodes.com/playstation2/granturismo3cheats.html

http://ps2.ign.com/articles/163/163846p1.html

http://www.gamespot.com/ps2/driving/granturismo3aspec/index.html