Officer Winter

Disclaimer: I can't guarantee these will work universally across the board, but these are the plugins and callouts that I have working in my game personally. Remember to always make a backup. I am not liable for your broken game.
 
Keep in mind to remain grateful as this is a modification we are playing free of charge. We are literally just over 12 hours into 0.4's release, so time is needed for authors to make the proper adjustments to their mods for implementation from 0.3.
 
Also, please do not include any visual or audio modifications as these should be irrelevant to the version of LSPDFR being played.
 
0.4 Plugins
Arrest Manager
Better EMS
Callout Manager
Cop Holster
EUP Menu (Emergency uniforms pack - Serve & Rescue)
Interaction+
Keep The F****** Door Open
LSPDFR Computer+
Police SmartRadio
Real Police Tape Mod
Speed Radar Lite
Spike Strips V
Spotlight
StickyWheels
Stop The Ped
Traffic Policer
Ultimate Backup
 
0.4 Callouts (install any audio folder manually into GTA V -> lspdfr -> audio -> scanner)
Assorted Callouts
CalloutsV (MVA callout seems to crash game once pressing "T")
Code 3 Callouts
Code Red Callouts 2.9.7
PeterUCallouts (some callouts work, some don't)
UnitedCallouts
Wilderness Callouts
 
0.4 Miscellaneous
Emergency Lighting System
 
NOT WORKING
LPCallouts
LSPDFR+

Thank Gio for this recommendation,he gave it to me and I shall recommend it to you. Use " Police Partner " by Darkmyre. He has a series of great GTA V mods and LSPDFR plugins and even call out packs. Not to mention you can use it to spawn and dismiss a custom outfitted partner and then use a trainer like ineseri stated above and then use the " recruit nearest ped as bodyguard" feature to easily forge your own SWAT/NOOSE teams or FIB or Gang Unit squad. 

You can use the Simple Native Trainer (or really any trainer)  to spawn a companion with mixed results.