You will need to have the full PC version of Grand Theft Auto: Vice City in order to install this mod. You need a fresh install of Vice City to install this mod or it will not work. If you have Ultimate Vice City 1.1 installed, you must uninstall Grand Theft Auto: Vice City, re-install Vice city, then install Ultimate Vice city 2.0.
This is a mod for Grand Theft Auto: Vice City that adds 40 real cars, a new bridge, new billboards and more. Everything is included in an automatic installer. 
New cars in Version 2.0: Washington = BMW 850; SandKing (Sunshine Auto) = Ford F-150; Sanchez (moto)= Yamaha YZ 450; Virgo = Porshe 911 Turbo; Sentinel XS = Vector M12; Regina = Lotus Elise GTR; Admiral = Nissan Skyline (Handling probleme in beta version); BF Injection = BMW Hamann; Oceanic = Toyota Supra Turbo; GreenWood = Nissan R390 GT1; Rumpo = Toyota Supra (Fast and Furious); Faggio = Shop Cart; Pheonix = Bugatti Veyron Concept 2004; Walton = Opel Speedster; Blista Compact = Ford TS 50; Moonbeam = Mercedes SL600; Mesa Grande = Ferrari 550 Barchetta; and Glendale = Dodge Charger.
 Other additions and changes: all the billboards are changed; new main menu; adds Twin Towers of World Trade Center; adds a new bridge, and adds a Nokia Store.
You can download it  here. 
Happy Gaming!