1969 Swinger 340

I beleive the 270 model to be entry level, both 2 door & 4 door. The Swinger (next step up) line to be a sportier image for the younger set, 2-door hard tops only. The GT & GTS is the upper level (buckets, console, & trim) also 2-door hard tops.. I don't think you could get any performace engines in the 270 models, at least I havn't seen any. What sets the GTS apart ,was it was the flagship for the Dart line ie. performance engines, lots of options.