+1 for the drop in power...what it does is shift the power band higher than you will be using...basically like putting a victor x manifold on a stock b18b1 motor and hoping to see huge midrange improvements...not going to happen.

ITR throttle body is almost a perfect size for most na motors but if your shooting for that high a 65-68mm tapered throttle body will be good.

It will probably raise your hp but lower your peak tq