Ok the B16A from the teg Xsi/Rsi, Does it have a LSD?according to the reference section it has a YS1 that is not so eqiupped. Does it mount different in the engine bay? Does it have the same TB as the B16B? What is the valve spring count on each side?meaning duals on both sides or just one? I assume the OBD is determined by the year.