Haha. I'm on a strict diet of non RC saving at the moment so I'm trying not to be misled by you building something fun...I can't help myself though, it's a disease... Maybe my current idea will also sway your attention and then you will likely be banished to garage for quite some time... We all get feeding off one another and this just gets scary....
I have built diffs a few different ways. The Tigercat and Euclid involved welding together machined parts for the housings and the 850 KW the main housings were machined from a solid chunk. Euc and KW have removable "pumpkins". The skidder has welded centers and the axle tubes come off. This type would probably work and look more realistic for the type of build you are doing. Not only that you won't have days worth of machining to redo if drilling the axle tubes doesn't go well on the first try.
