The dolphin.zip file you have requested: Maps Levels Missions / Dolphin Coaster - 1.1mb is not available. Perhaps try browsing all files for the game Need for Speed High Stakes and upload any files you want to share or are missing. This is the only information we could locate:
Dolphin coaster, cHAVEZ 2nd track for NFSHS
=- Highspeed track - needs a fAST car -=
replaces Coastal ("Dolphin cove" course), so
please make a backup before you install this
Extract the files;
1.) A addon race track for NFS: High Stakes.