I am planning on bracing the upper shock mount. The lower is held into the k-member with a 2" long threaded bung welded into the k-member and I've added a bracket to the frame (not seen in this picture) to make the LCA mounting a double shear point. The LCA arm is isn't on a heim, it is a rubber bushed mounting sold by Speedway. I've added a jam nut, so there will be some deflection in the bushing, but I don't anticipate it will roll much.

http://www.speedwaymotors.com/Garage-Sale-QA1-Adventure-Series-Rock-Ends-w-Bushing,9387.html