I looked into the 9.25”, but the problem with it was that I was thinking about using a Detroit TruTrac for the front diff. Although I could potentially get one for it, I was worried about the trutrac making the front axle turn all the time, since the cad on it (just like my stock 8.25” I have now) only disconnects the passenger side wheel. Based on that I guess to do this I would need to take a 9.5, cut it down and add a cad to both sides, effectively acting like it had lockable hubs, allowing me to run a trutrac. The only problem with this is that to have a cad on both sides of the diff I would almost certainly need to center the diff to give enough room for the cads, which would then conflict with my oil pan and the front drive shaft being still off centeredYou might as well use the AAM 9.25 diff from the 2500/3500 GM vehicles. It is pretty much the IFS version of the semi float 14 bolt and has the disconnect... ant it was meant built for the full size Chevy vehicles.