Where does a full-size Chevy pickup, 1989 out of air?

I have a 89 C1500 single cab, long table with a truck Fleetside (5.7L) and 700R4 tranny 350. I have my performance in many aftermarket parts (the whole top motor). It came with a stock air filter and the filter K & No. I just spent a cold air intake. I see that behavior is on the passenger side of the engine, but I'm not sure that the air is sucked out of there. Is it fair behind the wheel or elsewhere under the truck. It is a cold air kit (food in one place) is worth the extra power? You really get cold air plus the system values that already attracts from outside the engine compartment?

follow the throttle body