If you google for 'S.U.T 14 TO 17MM HEX ADAPTERS' it turns up all the places selling them- I didnt check all of them myself to see what countries they were/ ship to as several weren't English language sites :-/
I'm not sure what else to suggest really besides the 14-23mm adaptors and new rims; only other option besides cross-drilling the cvd stub axle to take a pin & regular hex would be to try and change the end of the cvds for something like a traxxas or MIP brand part, but I have no idea if that would work.
The issue with UE is that they make alot of their parts proprietary so that they aren't compatible with other brands or stock parts, only their own parts; the other issue is that UE havent made anything new for years so they havent kept pace with things like wheel hex sizes - it's either 14mm or 23mm, the use of 17mm on a truck is a fairly recent development which came along with the buggies and truggies when they suddenly shot into popularity. Anyone building a UE based truck these days is using 3rd-hand parts with very little manufacturer support, just gotta learn to adapt or make your own parts even..
