The 4.3 atlas was a great choice. The new rig will have a 3.2 case; similar capabilities with 2Lo but unfortunately quite the same strength of case and outputs.
~3" YJ springs SUA. Moved the spring hangers back 6.5" and moved the shackle hangers to the back crossmember. Didn't want to go SOA, so XJ springs wouldn't work for me. This method let me reuse the military wrap springs I already had, so it was pretty cheap to do.