Dont listen to the guy above.Even though the K20 is an awesome engine it's gonna be way to expensive. With all the experience I have had around Honda's...I wouldnt recommend turbocharging a B16A2...unless you are planning to the build the internals to take the boost. Honda engines arent very fond of boost unless they are properly built. As for the the LS engine...I wouldnt recommend it either...unless you plan on building the internals.Go all motor B16....Turbos are for pussies.