Increasing the speed.
This means an increase of power in the 50hp area, because the Kawasaki 1400cc bursts more than 200 hp at 11300 rpm...
Smoothing the lines
First of all, the big, LMP1 style fin is here to stay, and will likely end up in the finished car.
About the S2000, and the S2000 body
It will not even have the appearance of a S2000... take a moment and try to imagine what this thing will be when finished...