NFS Undercover - Porsche 911 VTA 'Speed Machine' Performance mod
Prerequisite: In NFS Vlted 4.6, you'll have to make the 911 VTA playable by going to car_list - fe_carlist, then press ctrl + Z to edit fields, then change the 'StockCars' value from 59 to 60, and then for slot (59), put in pvehicle for 'Class' and por_911_vta_08 for 'Collection'
Mod installation instructions are in the readme inside the mod folder.