Nfs+mw+junkman+editor

The "Junkman" name implies these are high-performance parts salvaged from the "back room" of tuning shops, though they are statistically the best parts in the game. Using a Save Editor

By default, you can only obtain a few Junkman parts in Career mode by selecting the marker after defeating Blacklist racers. nfs+mw+junkman+editor

You can typically only fully upgrade one car because specific parts like the Engine or Brakes are only awarded once during the story. The Mystery Marker: The "Junkman" name implies these are high-performance parts

on how to use a specific editor to apply these parts to your current save? nfs+mw+junkman+editor