I asked this question at the hobby shop but kinda got an answer that contradicted itself. I am running an OS .30 with the stock savage header and the ribbed for her pleasure pipe. I have been told that the pipe itself is limiting my motor. I am hoping to remedy that soon. My question is: Is there a better header or does it even matter? Changing the header on my real vehicle made a drastic change so I can't honestly see why it wouldn't work on the smaller scale.