OR if you have the funds, drop a k-series in (RSX engine) and youll be running 12's in a civic on a stock engine give or take a good driver. Im surprised that hasnt been suggested yet! If you go B18, youll have a hard time getting a B18C5 (type r) just cause there rare and ive heard that they dont particularly like boost too well with the compression...go with a GSR if you want the VTEC or an LS (no vtec) for boost. or even a B16 (handles boost better from what ive seen/heard) Do some research....Honda-tech.com has alot of useful info and good write-ups on stuff like this and can prob give you some good info in regards to what you will get from TR