It has Kodiak's 3 transfer case (2 of them integrated to axles) construction, because this truck borrows engine configuration from Goliath, four transfer cases are needed.
Not really part of our collaboration, I made this just for fun. I'm working on chassis for Kodiak-monster truck. In a whim I decided to put Aaron's (aarondeneau.artstation.com) Mack truck on top of it and equip result with Bigfoot 5 tires.