A "FitGirl Repack" typically bundles the base game with all official expansions released up to that specific version's date. For v1.27.2.1s, this generally includes:

The full game, along with all map expansions and cargo packs, is compressed into a much smaller download size compared to the original, saving time and bandwidth.

SCS Software is widely regarded as one of the most consumer-friendly developers in the simulation genre. They actively update the game for free and regularly discount older DLCs by up to 70% during Steam seasonal sales. Pirating their software directly hurts their ability to fund future map expansions, truck licenses, and engine improvements. Conclusion: A Better Alternative