I installed the Xfinity, Sprint, and Camping World Trucks mods from here and I can't get these cars and trucks to go faster and keep up with the AI. With AI set as low as 75, I cannot keep up with the AI at all, I get passed by all of them within the first 2 laps and can never keep up. I cannot modify about 90% of the setup on these cars and trucks. I was sure to change the chassis configuration in the showroom when choosing the car to set it to Speedway or Super Speedway but nothing works. I also left a comment in the discussion of the Sprint Cup mod for the creator over a week ago with no response so I was hoping someone else here could shed some light on this. I have only run on speedways, I have not tried road courses. Thanks.