My opinion would be to run a standard engine with minor mods. You'll have more than enough power to handle from a B18CR. If you would like more power, then go for a K20A, order the mountings from USA. Dont go rojak B20 and B16 and what ever cock shit...trust me you'll regret it when it goes kaboom. Reliability is the right way to go. If you really want to mod then just go for stage 1 cams and a rechipped ecu. Anything more and it will just kill the everyday drivability and reliability.