I missed this last saterday at track. I only caught it when taking slicks off and putting street tires back on. Normally I look at stuff like this when putting slicks on. Also found the LCA bolt at axle on passenger side loose as I could spin the washer by hand. Makes my wonder about the slight clunk I had between gears on the street when shifting. Thought rear was ready for a rebuild but possibly moving on LCA at shift instead.

I also know exactly where it came off. I was on the PA Turnpike heading to Monroeville, PA heading to track. Half way there I remember hearing something get kicked up and hit wheel well hard. I didn't notice anything on road but assumed it was a stone. Guess I was wrong.