This Mod Will Allow You To Buy All Vehicles From The Emergency Class & Drift Class In Game It Also Includes All Police Cop Vehicles & Their Correct Price Tags From GTA Online & All Vehicles That Can't Be Purchase From Online Is A Placeholder Of What They Could Possible Like If Their Were Made Available To Buy.It Also Includes Big Vehicles Like The Riot, RCV, Prison Bus, Firetruck & Ambulance.

How To Install:

Download The Premium Deluxe Motorsport Car Dealership Mod By I'm Not Mental
https://www.gta5-mods.com/scripts/premium-deluxe-motorsports-car-shop

After That Extract The File & Put It In:

Grand Theft Auto V Game Directory > Scripts > PremiumDeluxeMotorsport Folder > vehicles Folder > Paste

Note:

The Other Police & Drift vehicles That Aren't Available To Be Purchase In GTA Online That I Came Up With Their Vehicle Prices Of How They Are Worth If They Would Became Avaliable. Each Vehicle Is Release With Correct  DLC Order & This Mod Will Be Getting Updated If New DLC Vehicles Are Added To The Emergency & Drifts Class 

Also Feel Free To Download My Wanted Level Density Mod:
https://www.gta5-mods.com/misc/wanted-level-density