Rare! I had a super rare convertible! Mine was the only one!!!! (actually it was built within the last two days of 68 production, built July 28, 1968!)
Man! I thought my car was one of a kind. But all you guys have'em too! http://www.karmustang.com/prodnumbers.html They built many more 64.5-66's than 67-68's. Too bad though because the 67-68's were the best looking cars
There's a '68 coupe next door to me; the owner keeps going on and off about selling..... I agree they are the best looking (although the '69's are growing on me) - and my personal favorite is the '67. Just something about the "cheese-grater" pretend scoop on the quarter panels.