-Replace- install in :

Grand Theft Auto V\x64e.rpf\levels\gta5\vehicles.rpf\



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-Add-on- installation

1-Using OpenIV , extract folder "pnismo" in 

\Grand Theft Auto V\mods\update\x64\dlcpacks

2-Using OpenIV , go to: \Grand Theft Auto V\mods\update\update.rpf\common\data - open & edit dlclist.xml 

3-Add this line to dlclist.xml :

		<Item>dlcpacks:\pnismo\</Item>

4-close & save , done ..

         * spawn name : pnismo *