Might check about towing the Nissan if you haven't already. When we first started towing, I inquired about what was needed, and the Nissan Manual we were thinking about would require a transmission pump to be towed four-down. Check with Demco or Roadmaster about what will be needed. Other than that, just tow on, just don't even think about backing up with it attached! (OK, I know that it can be done, but it is still good advice) With our V-10, I just have to check that it is still back there every once in a while.