DOWNLOAD:
1) http://full.sc/2cmqx6z - Google Drive
2) http://full.sc/2c3oJRz - MEGA

Download: http://full.sc/2bJQX30

Screenshots:

Car list as of 2016.07.30 & Each models author is named below in the document.
Google Drive: https://drive.google.com/open?id=0B574ge9tOiQlQ1hJZWprYXZNTkk

Arrinera Hussarya
Aston Martin Cygnet 2011
Aston Martin DB5 Vantage 1964
Aston Martin V8 Vantage V600 1998
Aston Martin Vanquish 2012
Aston Martin Vanquish V12 2015
Audi A8 FSI 2010
Audi Q7 2010
Audi R8 5.2 FSI V10 Plus Quattro S Tronic
Audi RS4 Avant 2013
Audi RS7
Bentley Continental Flying Spur 2010
Bentley Continental GT 2012
BMW 235i F22 2014
BMW 330D Touring 2011
BMW 535i
BMW 750i E38
BMW M5 E28 1985
BMW M5 E39
BMW X5M 2013
BMW Z4i 2002
Bugatti Veyron Super Sport
Buick GNX 1987
Cadillac CTS-V 2009
Cadillac Escalade ESV 2012
Cadillac Fleetwood Brougham 1985 & Rusty
Chevy C-20 1965
Chevrolet Bel Air 1957, Rusty & Cabrio
Chevrolet C-10 1966
Chevrolet Camaro IROC-Z
Chevrolet Camaro ZL1 2012 & Race Car
Chevrolet Caprice Wagon 1989
Chevrolet Chevelle SS 1970
Chevrolet Corvette ZR-1 C3 1970
Chevrolet Impala 1964 SS Hard Top
Chevrolet Impala 1967 & 1972
Chevrolet Opala SS4 1975
Chevrolet Silverado 1994
Chevrolet Suburban 2015 & Unmarked
Chrysler 300 SRT8 2012
Chrysler Crossfire 2007
Classic School Bus
Datsun Z Rocket Bunny
Dodge Challenger RT 1970
Dodge Charger 2012 Unmarked
Dodge Charger O Death 1969
Dodge Charger R/T SE 440 Magnum 1970
Dodge Charger RT Police 2015
Dodge Grand Caravan SXT 2008
Dodge Viper GTS ACR 1999
Ferrari 250 GT Berlinetta Lusso 1962
Ferrari 250 GT California Spyder LWB 1957
Ferrari 360 Challenge Stradale 2003
Ferrari FF
Ferrari LaFerrari 2013
Ford Crown Victoria 1999 Police
Ford Crown Victoria LA Taxi 2003
Ford E450 LAFD Ambulance
Ford F-150 2015
Ford Gran Torino Sport 1972
Ford GT 2005
Ford Mustang Boss 302 2013
Ford Mustang GT 2015
Ford Pickup Hotrod Style 1936
Ford Sierra RS Cosworth 1987
GM TDH-5303
Hennessy Venom GT 2010
Hyundai Genesis Coupe 2013
Honda Civic Type-R
Honda NSX
Honda S2000
Hummer H1
Hummer H1 6X6
Infiniti G37 Coupe Sport 2008
Infiniti QX56
Jaguar F-Type 2014
Jeep Cherokee XJ 1984
Koenigsegg CCX 2006
Lamborghini Gallardo LP 550-2 Spyder
Lamborghini Murcielago LP 670-4 SV 2010
Lamborghini Reventon 2008
Lamborghini Veneno 2013
Lexus GS 350 Police
Lexus LFA Nurburgring Package 2012
Maserati Ghibli S
Maserati Type 60 Birdcage
Mazda MX-5 Roadster Coupe Series III 2007
Mazda RX-3 1973
McLaren 12C 2011
McLaren P1 2013
Mercedes Benz 300SEL 6.3 1972
Mercedes Benz 560SEL 1987
Mercedes-Benz 300 SL Gullwing 1954
Mercedes-Benz AMG GT 2016
Mercedes-Benz CLS 6.3 AMG
Mercedes-Benz E63 AMG
Mercedes-Benz G65 6x6
Mercedes-Benz G65 AMG
Mercedes-Benz ML63 AMG 2009
Mercedes-Benz S600 (W140)
Mercedes-Benz S600 Guard Pullman 2011
Mercedes-Benz SLK 55 AMG R172 2012
Mini John Cooper Works 2009
Mitsubishi Lancer EVO VI GSR
Monster Lightning McQueen
Nissan 370z
Nissan CBA-R35 GT-R
Nissan R390 Roadcar 1998
Nissan Skyline 2000GT-R
Pagani Zonda Cinque Roadster
Pagani Zonda R 2010
Peterbilt 289
Pontiac Fiero GT G97 1985
Porsche 911 Carrera RS 1973
Porsche 959 1987
Porsche Boxster GTS
Porsche Boxster S 987
Porsche Cayenne SCPD
Porsche Cayman GT4 2016
Porsche GT2 RS Racecar
Range Rover Sport HST 2016
Range Rover Vogue
Renault Megane RS 250 3 2010
Rolls Royce Ghost 2014
Rolls Royce Wraith 2015
SAAB 9-3 Turbo X
Scania R730 Streamline 4x2
Shelby Cobra 427 S/C 1965
Shelby Mustang GT500 1967
Smith 34 Hot-Rod
Subaru BRZ 2013
Subaru Forester 2010
Subaru Impreza WRX STI
Subaru Impreza WRX STI
Subaru Impreza WRX STi Series V 2008
Tesla Sport 2011
Toyota Camry V50
Toyota Celica SS-I 2003
Toyota Fj Cruiser 2014 
Toyota Hilux 2012
Toyota Yaris 2015
Toyota Land Cruiser LX V6 2016
Toyota Prius
Toyota Supra RZ 1998
Volkswagen Amarok
Volkswagen Golf GTI V 2006
Volkswagen Golf Mk6 & Police
Volkswagen Scirocco R III Typ 13 (2011)
Volkswagen T1
Volkswagen Tiguan 2013
Volkswagen Touareg 2008 R50
Willys Hot-Rod

You can find the download links in the videos descriptions or below here:
Download: http://full.sc/2bJQX30

You will need OpenIV to successfully install it.
You can download it here: http://openiv.com/
Script Hook V is recommended too: https://www.gta5-mods.com/tools/script-hook-v

Installation video: Step 1: Extract files to mods folder (Create one if it does not exist in your game directory)
Step 2: Install the plugins (Step 3 in the video)
That is all!

This Car Pack should work with any future updates because it has no data lines changed (except hidden ones in old files which won't affect future update compatibility).
Tested on Steam Version, so should work on all other versions too.
or use it under your own risk, I am not responsible if you get banned for using it online. Using it in singleplayer is fine and there is no risk involved.

Feel free to drop any suggestions you have. I am open to suggestions, also would be great if you could include a link for the mod if you want it to show up in a new update for the pack.