I just picked up a 64 Dart GT Vert with a 273 . . . black with a red stripe.
Put me on the list for the production info! Also would like to know the number in the black with red stripe convertible production run!
Hemmings reports only 12,000 Dart GTs for 1964 with a V8 engine, but no break out on convertible numbers (
http://www.hemmings.com/mus/stories/2008/11/01/hmn_feature13.html).
Thanks!