sway bar
I have the Hotchkis 73-76 sway bar on my car. It was the prototype/first one. It is 1.25"
Very high quality piece. They made it so there is not a bend in the middle of it to get the maximum performance out of it. The end links are rounded so they don't hit/snag on the LCA. The end links are cupped to accept the poly bushing too.
The frame mounts are channeled and they use aluminum spacers to save weight. The poly bushing retainers are gusseted for strength and stability.