Well it’s simple. We made our own. That’s the solution. Everything else on the lr struts are incompatible with the bmw hubs. Bolts don’t line up. Position is wrong. Mounting flange is too narrow. So that’s why I went this route.
The diffs aren’t rocket science luckily bmw only makes so many types of different differentials.
The lr transferase simply bolts up. I let the x5 control half of it and the locking is done manually with a switch.

My fix for my temp issues is simple. I got the m57. It lets me control a lot with just the fuel. Even the temps.

My radiator is closer to an e46 csl then a e39. I moved my coolers away from the bottom cause I want the car to hit firm metal before it hits a cooler somewhere.