Thanks for downloading :)
Ferrari 412 1985

copy the folder 412 to

OPENIV\Grand Theft Auto 5\update\x64\dlcpacks 

Go to:

OPENIV\Grand Theft Auto 5\update\update.rpf\common\data

and edit the dlclist.xml by adding:

		<Item>dlcpacks:\412\</Item>

Done! Spawn car by name 412


Credits:
Model from hum3d
Hub and texture : SGDESIGN
Various textures from Forza 4