NASCAR Thunder 2003 cheats and cheat codes for Gamecube

Unlobk Fantasy drivers
Go to the Create-A-Car option. Type "Extra" as a first name
and type "Drivers" as a last name.

Unlock Dale Earnhardt
Go to the Create-A-Car option. Type "Dale" as a first name
and type "Earnhardt" as a last name.

Unlock Richard Petty:
Go to the Create-A-Car option. Type "Richard" as a first name
and type "Petty" as a last name.

Unlock Tiburon Speedway bonus track
Have a saved game file from an EA Sports 2003 game in your memory card.

Unlock paint scheme for a specific driver:
Win 1st place in a race in Veteran or Legend mode.

Unlock Dale Jr.'s Oreo and Nilla schemes
Win 1st place in the Steve Park Thunder Challenge.

8 Championships videos Lightning challenge:
Win 1st place on all 8 championships