Nascar Thunder 2003 Cheats

To unlock the Sandstorm 500K at Phoenix, do a race with any driver at
the Checker Auto Parts 500.When you win the race, after the
celebration ends, you should get the Phoenix Road Course-the Sandstorm
500K.

Select the Thunder Challenge or Lightning Challenge at the game mode screen. Complete the various challenges to get new Thunder Plates. Note: The Plates are awarded randomly from game to game -- winning a certain track with a particular driver will not unlock the same Plate between games.

To get Richard Petty go to creat a car and type in richard for first name and petty for last

First go to game length and put it on 3%. Then go to where you can change to rookie and veteran.
Put it on veteran. Then go to where you can pick the cars. Pick a car with a special paint scheme and pick a track. then race. When you win the race after th race you could get the paint scheme.

Enter "Dale Earnhardt" as a name at the create a car screen.

First, win a race with Kyle Petty's 2002 Sprint PCS Car to get the 2001 Sprint PCS Car. Then,win a race with Kyle Petty's 2002 Charity Ride Car to get the 2001 Charity Ride Car. Congratulations! You have all of Kyle Petty's paint jobs.