What's the difference between Grand Theft Auto 5 Enhanced and Legacy?

It's been a few years since current-gen consoles got their fancy GTA 5 upgrade loaded with new features and modern graphics updates, but that version is finally available on PC now as Grand Theft Auto 5 Enhanced. The souped-up version of GTA comes to PC with Hao's Special Works auto shop, new vehicles, and enough technical enhancements to test any hardware upgrades you've made between now and 2015...
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