I don't understand this.I have a 1988 k2500 six lug. 14 bolt rear and big front. It’s the 9.5 with hubs that bolt right to my cv axles.
"CV axles" go through the middle of the hubs, held on with one bigass nut.
On the other end, the differential of both the 8.25 and 9.25 have flanges that bolt to the CV axles.