GDS0033 is likely a model number or a code associated with the game's export version. In the context of arcade games, export versions are often modified or repackaged for release in other regions, which may involve changes to the game's hardware, software, or packaging.
Now, regarding the "GDS0033 Repack" part: initial d arcade stage ver 3 export gds0033 repack
A "repack" typically refers to a re-packaged or re-distributed version of a game, which may include updates, fixes, or modifications. GDS0033 is likely a model number or a