I am planning on doing a small modification to my Mustang this winter but nothing to much since I am a college student. How much horse power would a intake plenum and 75mm throttle body give me if any? I have seen package deals were you get both ranging from as low as $200-$400
Would I notice a bigger difference with some pullies or even some shorty headers?
Would I notice a bigger difference with some pullies or even some shorty headers?

