Even if there was an adapter for using the Toy case, there is not a whole lot of room on the passenger side. The drivetrain in my truck is offset to the right a bit and looks like there would be a lot involved to get a driveshaft room on that side. I'm not sure what you are out to achieve with your truck, but there are some products out there. There is a 4" Trailmaster lift available for the D21 (chassis spec of your truck) There have been quite a few SAS done to that chassis. Lockers are available for the rear and there are lower transfer case gears available as well. Products are out there, you just have to look harder to find them.
With all due respect to Marlin and the members of this board, visit
www.Nissan4Wheelers.com You'll find a lot of Nissan info there and get leads on where to get things you ned for them. Good luck, and if you have any questions just ask, I will help in whatever way I can.
If the link is out of line please feel free to delete it or let me know and i will edit it.
Lator....