Porsche 997 GT3 Cup MR

Check the README for installation instructions!

This is a special version of the Porsche 997 GT3 Cup R inspired by the modifications that Manthey do to Porsches in real life.

** The modifications compared to the Cup R:
Performance improvements:
- Slight weight reduction
- Slightly better aerodynamics
- Small turbocharger
Visuals:
- "Grello" livery from 2025 24h Nürburgring
- "Greeno"livery from 2023 24h Spa
- Some custom textures (wheels, headlights, tires)

Update1: Adjusted default tune