I have a '15 Ram 2500 Reg Cab 4x4, 6.4 Hemi, 4.10 LSD w/ 8.5' Fisher Xtreme V-plow. Trucks been great so far. Also have a '07 1500 with the 5.7 Hemi. Still runs great.
GM uses the same axles in their trucks as Ram does. They both use AAM front and rear diffs. GM uses a IFS type front. Ram uses a solid front axle. GM uses 10.5" or 11.5" depending on the truck. Since 2014 Ram uses 11.5" in all 2500/3500 SRW trucks and a 11.8" in their DRW high output diesels trucks. GM may do the same with their DRW diesels, not sure.
NYH1.
Don't know about the front but GM heavy duty SRW pick ups run the GM Corporate full floating 14 bolt axel. They have since the early 70's