just recently re installed lspdfr  ive noticed most of the good plug ins are exipred or no longer updated so wat ar  some of u all useing  to be able to pull people over  ped search  an radio mod  were u called in license plates

This is a question that is more based off personal preference, though I think I can speak for most people on a majority of the mods as a lot of them are popular or the only variant of the mod.

 

Callout Interface and Grammar Police -> Work hand and hand with each other. Your own working CAD/MDT and talking with dispatch. It is recommended to install both. This will also allow you to do a majority of routine officer duties such as towing vehicles, calling in pursuits, and plate checks. Give the description of each of them a read.

 

Simple HUD -> Not quite required, as you can function without this, though this is great for immersion if you like to call in locations during callouts, particularly pursuits, and have a general idea of the speed limit of each road if you are a person that likes to do radar.

 

Clear the Way -> Just gets the annoying trucks and larger vehicles out of the way when you are lights/sirens. This is not compatible with DLS as of writing according to the developer.

 

Enhanced Weapon Control -> Instead of going full automatic, this allows you to control your fire rate instead of having to teach yourself trigger discipline to RP a semi automatic rifle. Not a necessity, though a plugin I extremely recommend for those who are getting into shootouts and like their rifles. 

 

Riskier Traffic Stops -> Fixes the mundane traffic stops of LSPDFR and essentially makes you want to do traffic stops more, instead of the typical traffic stops with little going on.

 

Super Events, Ransom Ambience, and Immersive Ambient Events -> I have not tried out RA or IAE as of writing, though these essentially allow you to be a person to witness what would typically be a callout you are responding to. These 3 all do the same thing, though may have their own unique events.