My un-scientific survey indicates that about 10% of the Dodge 2500 series have the 4.10 differential option (as per the Monroney label , i.e. 'Window Sticker'). I have yet to find a Ford 250 that has the 4.30 differential.
So, my easier path may be the 2014 or newer Ram 2500 6.4 Hemi, 4x4...