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

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

http://cheats.ign.com/ob2/068/013/013846.html

http://vgstrategies.about.com/od/ps2cheatscodesg/a/gt3aspeccheats.htm

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

http://www.neoseeker.com/Games/cheats/PS2/granturismo3.html

http://www.gamerevolution.com/cheat/ps2/gran-turismo-3-a-spec

http://www.gamefaqs.com/console/ps2/code/197470.html

http://www.askcheats.com/cheats/PS2/Gran-Turismo-3-A-Spec.html

http://www.gamecheats.eu/ps2-cheats/gran-turismo-3-a-spec-cheats.html

http://www.psxextreme.com/ps2-cheats/50/gran-turismo-3-a-spec-gameshark-2-codes.html

http://www.supercheats.com/playstation2/granturismo3aspeccheats.htm

http://www.neoseeker.com/Games/Products/PS2/granturismo3/action_replay.html

http://www.cheaterskrypt.com/games/view/472

http://www.playstation2-cheats.co.uk/your_cheats.php?4406

http://www.level80.co.uk/ps2_gran_turismo_3_a_spec_cheats.htm

http://www.1000waystocheat.com/ps2/granturismo3aspec.html

http://www.cheatmasters.com/cheats.php?4406

http://www.cheatsguru.com/ps2/gran_turismo_3_a_spec/

http://vgstrategies.about.com/od/ps2cheatscodesg/a/granturismo4.htm