Brian...I didn't mean to be offensive when I mentioned metric. As a matter of fact, I'm very familiar with metric. I worked outside of Toronto (Scarborough) for 2 years. Used to commute every weekend from Rochester, New York to Toronto

I borrowed a set of dial calipers and like Robot (Thanks Robot!) said, it is a .177 ID which calibrates to a 12-24. Don't know where I'm going to find one of those! I would like to redrill and tap for a 1/4-20 but the holes in the trunk lid are inserts and there isn't enough stock to redrill.

Thanks again.

Your Yankanadian Buddy!