This page contains Gran Turismo 3: A-Spec Unlockables for Playstation 2 called "Professional mode" and has been posted or updated on Apr 2, 2007 by ilb322. Let us know what you think of this Unlockable by thumbs voting.
Select arcade mode, then highlight the "Hard" selection on the difficulty selection screen. Hold L1 + R1 until it changes to "Professional".
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