Here are some pics of my home brewed K-member and LCA reinforcment on an A-body. Same ideas apply to a E-body K-frame.
Don't put plates over top of the motor mount support like shown in this cardboard mockup. The motor mount needs that area to move around in. I learned that quickly.
Reforced on left, stock on right.
The LCA pin in the middle with the egg shaped shoulder can not be used with poly LCA bushings. Pins and bores are polished to minimize squeeking and suspension binding.
73-76 A-body (like E-body) sway bar LCA on left and gusseted with 1" strap to be lightweight and effective. 67-72 A-body sway bar style LCA on right.