The Allundra F4 GT-R is a Track Only version of the F4, it's got several improvements such as a more powerful engine, active spoiler, front canards, and the removal of pop-up headlights for better aerodynamics!
The GTR variant also includes boost that can push the car to over 1000 Km/h (621 Mph)!
The usage of more carbon fiber reduces the weight a bit and also makes the car more agile.
In my opinion, this is one of the best cars i've made in terms of gimmicks (active spoiler, boosts, openable hoods and canopy, etc).
This is one of the worst description I've typed but whatever 🙄

Showcase : https://youtu.be/hQeq6HoZr6k

Performance:
2800 Horsepower
0-100 km/h (60 mph) in about 0.9 seconds
Top speed 726 Km/h (451 Mph)
Top speed to 0 in about 5 seconds
Insane Handling

Controls :
Pitch - Accelerate
Roll - Turn
Brakes - Brakes obviously
AG1 - Headlights
AG2 - Hazard Lights
AG4 - Canopy
AG5 - Hood/Bonnet
AG7 - Boost
AG8 - Race Engine (instantly on)