This isnt even gonna be the main wheeler.  Ill put the trans and cases out of the 90 in it and the 3.90's so it'll be somewhat off roadable.  Ill put a r151f and dual ultimate in the 90 with the axles from the 83.  Ive already got a lockrite for the rear but i think Ill leave it welded, but Im sending off the $$ tomorrow for a v6 lockrite with carrier for the front.