Nissan doesn't usually have "spare" circuits in the harness that can be re-arranged for different applications. The VVT of the 07's and up include a few other things too, off the top of my head, a current sensor that is attached to the battery cable, different cam sensors, VTC actuators. You'll need the correct harnessing and the correct ECU. Also, if the Titan is anything like my Maxima, when I put an Infiniti drivetrain in it I also had to have the correct keys that matched the ECU and NATS transceiver. I ended up buying an entire donor car for my swap, since the newer Nissans are so integrated, I needed the entire harness, ECU, PCM, NATS system, original keys, etc.