Auto dual cases /3.4 automatic swap

[GoatmtoffroadLLC]

Im doing a 3.4 swap motor and tranny donor is a 98 runner with auto tranny and it is going in to a 95 runner With auto tranny
I'm Putting the 3.4 and tranny in the 95 and doing the RHD conversation.
So my questions are Should I just do  dual cases as well ?
Or would i be better to just put single case with 4.7 gears and maybe twin sticks
Any thoughts would b great
Also looks like I need a T100 (tranny) pan to do the RHD  do I need it if I do duals or just with a single case