I am new to the tuner concepct and I am looking to beef up my 1990 Honda CRX HF but I am at a lost. it has the d15b6 engine in it. I am planning on later doing a body and suspension mod but I am at a lost as for the motor. I don't know if I should just keep the motor in it or swap. I do know that what ever I do I will want to keep the working AC and PS. Any ideas will be helpful.