I recently bought a another civic. It has a d15b swap I was told the motor was vtec but doesnt say it on the valve cover. yet on the head there is a place where the silenoid would be but they bolted a plate over the opening. any chance do you know if the head is vtec? I was also wondering how hard it would be to swap it back to vtec as far as wiring and what all I would need to do so