I had a Calmini 2" SR on my zook when I went SpOA, but the combined 2" with the RRO 5.5" made for a little too much binding on my front driveshaft for my liking. It was really yellin' at me when I put it in any gear other than first. And for some reason, the front was a bit taller than the back, so when I took the SR off, I left the rear Calmini shackles on (they're big, beefy, and look cool). That balanced the rig out again, and got rid of my front driveshaft problem. I was also able to bastardize my front calmini shackles into expanders. I still have the front fangs for the SR kit if anyone wants 'em. They have towbar connectors welded on them....
Pillard
'87 Sami, 5.5" SpOA, 33" Pro-Comps, Snorkel, 8k winch, 23" buggy-leafs, etc, etc.