The handling feels "floaty" (specifically the Koenigsegg). Solution: The Mega Pack uses "Handling V2.5." If you prefer vanilla grip, delete the HANDLING.BIN script from the mod folder and let the game regenerate the default physics.
Move the CARS folder from the Mega Pack directly into your main game directory. This copies the 3D models and texture files. Top Car Categories Included in the Pack Highlight Models Bugatti Chiron, Koenigsegg Jesko, Ferrari LaFerrari Highway speed traps JDM Classics Nissan Skyline R34 (Paul Walker Edition), Toyota Supra MK5 Drifting and tight corners Track Monsters Porsche 911 GT3 RS, BMW M4 GT3 Blacklist circuit races Nostalgia & Lore NFS Carbon / Underground bonus cars, concept vehicles Career immersion Troubleshooting Common Issues Game Crashes on Loading Screen