Hey ,Seems like you already got it ordered, which is great. I have one BB with a split case and one that is attached to an HF2AV, but not run yet. They seem to work fine with either transfer case so it just comes down to wanting AWD or not. I would DEFINITELY add a reservoir and external vent! They get hot and try and blow oil out the seals, so give it more oil and a place up higher to vent so it's happy. Don't be like me and leave it completely sealed!