Im going to be doing a 4l60-4l80 swap and i have a buddy that has a transfer case off a 2005. the tranny im getting is a 2000. what would i have to do to make the t-case work? its a 261 gm transfer case. from what i have read it will work with 99-05 1500-3500 trucks. but will it just drop in or do i need to mess with other stuff, or is it even worth the hassle?