Looks like I'm outta luck.. I will have to wait till Yukon produces more sets.
The front diff is from a landcruiser HJ75. There are produced by Toyota Commercial for Mining use only. Same as a 80 Series HyPinion third, But the diff looks like a mini truck axle on steroids.... much heavier. I am trying to get my hands on more of them. The rears came with full floaters and disc brakes.