All I asked was why she used a square design haha. But I would do a lot of research on intake design before making one. It seems that all high hp cars have rounded tapered manifolds with the "trumpets" off the floor. The rest is based on turbo vs non turbo, displacement and a whole lot more r and d.

Also a good read bluespunk. I've read that before and its so amazing how little changes make a huge difference.