Can/should lower control arms be modified to accept sway bar?

Pic 1: 73-76 LCA
Pic 2: 65-72 LCA
Pic 3: My own home-made LCA stiffening plates with integral sway bar tab. No apparent flex in the tab when running a 1.25" front bar and 1.14" torsion bars........ The hole had not been drilled yet as we wanted to install them in the car and line everything up before drilling.