Wtb: 1971 dart gt
I've got a 1970 GT also. They are very rare and I never saw one until I moved out west in 2001 despite working on 70 darts since 1970. They are an option for the High trim (LH23) Dart Custom that adds bucket seats, console shift and some name plates. Mine is a 318 automatic, but I've seen 6 cylinder versions - I've seen half a dozen converted to 340s.
The 1971 has a way cool name plate on the lower rocker panel below the doors. In Washington, the Evergreen State, there were apparently a few dealerships that ordered a run of tripple green ones for promotion.