That is an impressive SC...
Regarding the fuel lines, I am surprised that 2 -6 lines would be adequate for what the car is being designed for. I am not doubting, as I am sure he has done his homework, just surprised.
In mine, I run 2 Walbro GSL-392 pumps with -8 fittings to a single -10 feed line into the engine bay, splitting to 2 -8 lines to feed each end of the rail with a center return.
mike