i think he is using BT standard cam. wan to change to any high cam.
but how high is considered high? 264 is high for intake? or 272? or even 304? some say even why u change to aftermarket cam, is consider high cam already, no matter the duration, some say if the aftermarket no need to change valve spring, still consider normal, so 264 intake is still normal, 272 must change spring. so 272 onwards is high cam.
so please anya sifoo comment...