The Rock Solid Engines, Billet CNC Reed Valve Intake will most certainly build noticeably more low and midrange torque, even with a standard engine, though a jetting change is necessary to optimise the combination.
I can highly recommend the reed valve intake, plus it makes the engine significantly quieter. I was sick and tired of the overly loud intake noise so i'm happy with the reed valve intake just for it's ability to make things more pleasant on the ears.
Fabian