Hi, As I posted before:let the engine as it is!The clue of the TS is not its engine BUT IT IS WITH ITS TRANSMITION KIT!!!!!!! For huge increase in acceleration in every gear from 1.800-8.200 rot/min you MUST make the following changes: -new clutch(TRD,JUN) -new fly wheel(TRD,JUN) -new coilovers(TEIN,KONY,etc) -new air filter(TRD-USA) and the best one FINAL GEAR SET from C-ONE!!!!!!!!!!!!!!!! After ALL above modf. your car will be a real beast! If you are looking for A RACE CAR add up IT THE WRC short gear from C-ONE! The others (induction,exhaust etc) are common and wouldn't change dramaticaly the car's behaviour or its performance! Mircea Sorry!I have forgotten to mention that my car is a Corolla TS! Anyway a LSD from TRD-Japan is welcome! Mircea