the pump and stuff will still hook up exactly the same, it's the ecu and stuff that's different

can't remember if they are green for the 2wd and red for the 4wd but they have big stickers on them so you don't mix them up

and the resivours are on different sides as you say to stop the fluid from heating up when they are fitted to cars with the exhauts on one side or the other, they are simply reversed