The RealCars03 DLC car pack (As New Add-On) mod for Grand Theft Auto V is all about adding real-world vehicles to the in-game world. This pack introduces a variety of high-quality, finely-detailed cars that you can drive around Los Santos and Blaine County. The mod includes a wide variety of cars, with everything from sports cars, muscle cars, to luxurious sedans, each of them being a replica of a real-world vehicle.
The mod is integrated as an Add-On, meaning that the cars are added to the game and you can find them in the traffic as you explore the world, making for a much more realistic and immersive gaming experience. Currently, exact specifications such as power, speed, and torque for each individual car in this pack might vary as these are based on their real-world counterparts. However, expect each vehicle to exhibit unique performance characteristics, handling, and sounds that mirror those of their real-life versions. 
Please note you will need to follow the mod installation instructions carefully in order to ensure that they function correctly within the game.

Cars Included:
Invetero Coquette3 = Pagani Zonda Cinque Roadster by kimpet
Progen T20 = 2011 Audi R8 GT 0.5 [BETA] by lunchxbles
Virgo = 1967 Ford Mustang GT500 by louping0
Osiris = Koenigsegg Agera 1.0 by bigossi5 (+ upgrades)
Stirling GT = Porsche 918 Spyder by louping0
Windsor = Arrinera Hussarya (Polish Supercar) 0.7 by KAFAROS
Chino = Toyota GT-86 1.1 [BETA] by Skint_94 (+ upgrades)
Coil Brawler = Bugatti Veyron - Grand Sport 3.3 by AitGamers

Manual Install:
BACKUP!!! first your update/update.rpf and then add 4 files from my archive as they are sorted in folders, to your update.rpf with OpenIV program.
Create in update/update.rpf/dlc_patch/ realcars folder and add content.meta to it (with OpenIV). Add my DLC ''realcars'' folder to mods/update/x64/dlcpacks/ in wright place and that's it. My handling is modded, but you can use data from any handling from bonus folder if you have any problems with mine.

Automatic Install:
BACKUP!!! First update/update.rpf archive (copy to temp folder) Copy my entire update folder to mods folder or root of the game, if you don't have mods folder copy to root of the game. WARNING!!! my update is fully modded with various mods and some of them you might not like. If so, do the manual install.

Credits:
kizacudo