USAFAIRCREW - the setups between what we run here in Canada and the US isn't going to work for these chaps. I've run both in the UK and over in NA and the setups are opposite. where we are running the lightest front spring to induce bodyroll and steering they are running the hardest front spring and rollbars to try and minimize that. The main difference is the track surfaces, Dirt compared to high traction astroturf and the tires they run on that surface.
Where we are running our cars near minimum weight they are centralizing low weight through the middle of the car again to manage grip roll and keep a low center of gravity.
Trust me the US setup doesn't work across the pond and vice versa.