My yj springs are pretty soft and flexy. I'll have bilstein 5125's valved 170 / 60 on the front and bilstein's valved 255 /70 on the rear.
I do have to use in-boarded shock mount for the rear, it sucks, I know, and in-boarding shocks does potentiate body roll. Hoping the the 255 / 70 shocks installed at a 41 deg angle [ the best I can do ] will help mitigate some body roll.
Been chatting with Tony, the owner of the TK1 Rockcrawler kit. Gave him my zuks specs and my expectations / needs for managing my samurai's body roll. He thot his Rockcrawler kit with 16" arm would provide the anti-sway that I need. It has the smallest diameter bar at .750".
Some pics of the modified Spidertrax bar I just completed. The rear shock angle WAS almost 50 degrees when spoa, it is now 41 degrees with the modded mount and spua.