Well that ad is in the way but I know where to find this info, I followed it when I did mine. Some where in there, is a mention of some hub adapters that give you a 17mm hex. I don’t know the part #. Did you get on the Tekno site? There’s an entire thread where @WoodiE lists a lot more parts...
I would go with the 2.8 OG badlands pre mount. Expensive but on the terrain your running they will cut the mustard. It’s what my DB has.
When I get around to it, I’ll post up a picture. If I want to keep the tires from ballooning I belt them using some vectran braid.
These will balloon too...