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Playstation 2 - NASCAR - Dirt To Daytona cheats

Master code
Press R1, R1, Up, Down, R2, R2, Left, Right on the title screen. 

Unlock Richard Petty
Win 1st place on all the challenges

Get $10,000 in career mode
Press Up, Down, Left, Right, Up, Down, Left, Right, R1, Left, Left

Pit crashing
Go into the pits at the end of pit lane. 
You can crash into cars, which shows on the tack.