Postby XVTer » Thu Feb 20, 2014 8:00 am
Getting the electrical systems to work together would be a pretty huge undertaking as all of the drivetrain components in the pathy are integrated.
Besides that, as for hardware, if you're going to be throwing down 450hp, you'll probably want the 4l80e and transfer case out of a 2500 series truck or suburban.
As for space, a 2- or 3-inch body lift will give you some additional room for the big tranny.
Overall, it may be possible (anything is with enough $$), but I think that it'll be much easier/cheaper to go with a replacement nissan transmission. Not to mention that with an older v8 tucked under the hood, it'll be next to impossible to pass safety/emissions inspection (if that matters to you).
If you go ahead with it, definitely post up your progress!