You can build the INTENSE one much cheaper if you wanted to. You'd need to find a few parts on your own (2 3" lenghts of 3.5" pipe)
3 Feet of Intense FWI tubing: $35.97
K&N Filter, 7" from INTENSE: $34.99
Generic Silicone Coupler: $10-$15
2 3.5" Pipe Sections: $5-$10???
You would also need to relocate your IAT sensor, since you would not be using the INTENSE coupler.
Either cut the wires and extend, like several members here or pay $15.99 for the one from INTENSE.
However I went with the INTENSE package for $179, since it includes extremely high quality clamps, high quality coupler and high quality aluminum pipe inserts. However you do pay $50 extra for the nice coupler. but its a custom made part (low production = high costs) and silicone stuff is not cheap.