Chrysler recommends a nicklel-bearing grease for that application. I would suspect that the version of Never-Sieze that has nickel in it would be a good substitute. You can get that at most decent auto parts stores (probably not at AutoZone, but certainly at NAPA.)
1992 XJ 2" lift -- RIP
2000 XJ 3" lift -- Australian Ford Big Brakes up front, rock rails, ZJ rear discs (with WORKING parking brake), C4x4 rear bumper/tire carrier, Hella H4 headlights, IPF driving lights, OEM skid plates, OME springs/shocks, JKS LCA's, JKS Sway Bar links.