May i ask why you go with a thrasher cam? If you're going with it because of the sound then ok, but if you actually want to make power on ported heads then go with an xpz or an s1x with 1.8 rockers. If you notice on CGP's hp chart dyno numbers from the thrasher aren't really anything to write home about. So all in all, i suggest not going with the thrasher cam as it's IMO a junk cam.