I did on my previous LJ. In my case I sourced the fittings, cooler, and other parts myself, then did the install. When I do it again, I'll just buy Blaine's kit from BMB. FWIW, the single curved fitting (middle left) is one he brazes and enables a much better connection to the PSC box. And, yes, you'll need the BL. Otherwise getting the connections into and out of the larger steering box will be problematic, due to interference with the grill.
Give West Texas Off-road a call. Factory size bore box with a cross-over steering set up is idea. Also, you’ll want to make a bracket off the axle for the ram or at least weld on a new beefy track bar bracket.