ok, that helps me out.
If I may ask, because I am not aware of your ideas here.... Is there a particular reason for the full time? on snow, it may not be optimal to have all four tires lock up when you tag the brake. Is it perhaps due to the ability to stay inside the rig and not get out to turn in the hubs? 4wd is possibly (arguably) most dangerous when used in the snow, as the loss of control in braking is sometimes a really bad thing.
Ok, my rant is done.
the np241 is available with 23, 27, 31, and 32 spline inputs. all of these should be supported with drivers side drop cases. If you need a passengers side drop case, there is one available for chevy and ford made in the late 80s, early 90s.
Naturally, the ford will have the 31 spline output and bolt right up to the AOD trans. If you decided to keep the ford idea and use a Ford 5 speed trans from, say, a 91 pickup, you would still have a 31 spline output, and the transfer case would bolt right up.
