Updated post on the modded outfits, cop, noose, superhero, paramedic. Plus the duffle bag. There's over 30 job links to different jobs for colors of duffle bags and the outfits as well.
How to obtain the Police Outfit - GTA Online - GTAForums
How to Be a Cop in GTA 5 Offline: It's easier than you think! - Tech List Online
How to obtain the Police Outfit - Page 40 - GTA Online - GTAForums