The 963 mod I was driving so far was one that included URD physics, very stable, rolls on rails, perhaps too much. That's "good" for when you don't have much skills; It allows you to drive without constantly crashing, and encourages you to keep playing.
I think your mod makes the car a bit more "spicy"...it still drives very well, but you have to be careful if you hit the banks or grass, or how you accelerate when managing corners so you don't get understeering. .. I like it better than the version I had before, it makes the car more fun to drive and perhaps more "real", although as I will never know, having never had the pleasure of driving one of those things in real life..
Thank you for doing that magic with the mods and sharing it with others.