restrictions in your na setup is about as good as ceramic blades in your muggler tip. Every little bit of extra pipe and stuff will kiil performance. You can buy it if you want and wrap it in a towle and leave it under your bed.
Just don't put it on. It will slow you down and anyone who looks under your bonnet will think you are a pure ricer.
now for the constructive bit.... If you want to increase your performance. Get a pod and partition it off from the rest of the engine bay and run some of the springy pipe stuff from the bottom left hole in your front bumper. This way you will be getting air that doesn't pass through the radiator and AC condensor. You could also heat wrap the pipe that is in the rest of the engine bay to keep the temps down a bit more.
I hope this is useful info