Install in the latest patchday, which as i'm writing this is:

Grand Theft Auto V
				|
				->update
						|
						->x64
							|
							->dlcpacks
									|
									->patchday22ng
												|
												->dlc.rpf
														|
														->x64
															|
															->levels
																	|
																	->gta5
																		|
																		->vehicles.rpf