One of the pre-order bonuses [you can also get it as DLC] for MAFIA II which brings vehicles and outfits for Vito based on the theme of World War II (these outfits without the DLC are NOT in the game. It does not add the outfits used in the first mission.).
PC System Analysis For Mafia 2: War Hero Pack Requirements
To run Mafia 2: War Hero Pack on high graphics settings your PC will require at least a 0MB GeForce GT 240 / Radeon HD 2900 Pro with a Pentium Dual Core E5500 2.8GHz or Phenom II X2 550 Black Edition CPU. For your PC to completely meet the recommended requirements you will also need 2 GB system memory.