The taper is for a reason. The stock intakes have to make torque and also make top end power, a blend of both. maybe the $1500. intakes make some power but I have not seen anyone make anything over 10whp with the tweaked intakes and ported "Y" which seems odd as the Y and the inlets to the main plenum of the intakes are modified heavily but for some reason the return is not there. I'm doing exhaust in hopes Rob's headers make 15whp minimum. I figure if making 42% more boost should make a bit more spent gasses to get rid of making exhaust work more likely to have a good return the more boost that is run within the limits of the SC.