Nexus Mods has a dedicated Contraband Police section. Look for files titled "Perfect Endgame Save" or "Max Rank No Cheats." The top-rated file here typically features:
By default, the game's save files are located in the following directory on Windows: contraband police save file top
Keep one copy on your PC, one on Google Drive, and one on a USB stick. Nexus Mods has a dedicated Contraband Police section