I never did show what I did with the 2wd motor mounts to make them work with the 4x4 stuff. What I did was I took a piece of metal and bolted it to the bottom of the frame. I then welded it to the motor mount and then added some gussets for some support.
Drivers side
Passengers side
I am going to have to trim the bottom of the motor mounts some as I have about 5 inches from hitting the differential and I don't have all of the weight on the truck yet.
I went ahead and bolted the 6.2/th400/np208 all together to get an idea of how to make an engine cross member and to also see what I was going to have to do to mount the th400/np208 to the frame.
This is the stock 2wd tranny cross member, i was thinking of modifying it to work with the np208, but I think I am just going to make a whole new cross member for it, as I have heard that the stock 208 cross members are "W" shaped.
As you can see it is not far enough forward, and the front drive shaft wont mount up with it being that way. So I think the best thing to do will be to make a whole new cross member.