Funny, I just sent a friend a link to a 1969 Firebird convertible that is for sale on Hemmings.com.
My friend had an identical dark blue ‘69 Firebird 400 4 speed coupe all through high school. It was considered the “fastest car in town” in Hamilton, Ohio in the mid ‘70s. Its 400 having received A LOT of aftermarket work.
Yours was quite the rare car! Though they did make a few convertible TAs in 1969. My remembrance was there were 7 built.
Are you talking about the Hamilton just outside Cincinnati? I lived there for about a year.