I have a B16A and i was looking at different kinds or cai's. But when youtubing diffrerent ones i cam across one were if you had open headers like the 4 circular holes that come out a little bit. but instead of having them on the headers they had it were the throttle body comes out from the 4 holes... but im not sure what its called. is it a custom mod? or is it a kit that i can buy?? I think its made by itb??