Ah now its clear why you knew what the differences are in trannys!
I had put the Downey Aux cooler on my four runner (same fittings) and the downey kit (not needed at all but they secommended it) came with 2 blue anodized fittings each (4 total) and they hasd some funny thread combos adapting to one another..... I know this doesnt help much but when trying different sizes beware they may fit at first and after about 2-3 turns it will bind up on you, uhmmm dont ask how I know

