One of the Ebay options has a 1/2" longer spline and the other has a 1" longer spline - if you get the 1/2" longer version you don't have to drop everything - the 1" longer one needs more stuff to be dropped.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards