The following is a port of the Kamuro Central Underground Parking map from Yakuza 4, which was utilized in a limited capacity for a handful of missions and side quests. Despite its infrequent use, the model holds up well and has been successfully converted by @Car_Killer . In order to optimize performance for low-end PCs, I have made some modifications and improved textures. 

Remember to extract the mod to ensure it works correctly.