you are really asking two different questions......
for muscle car "presence" i say the swinger. it was more a bare bones purpose built car. the GTS had more luxuries. to me luxury isn't muscle. plus from all the older friends i knew that lived the late 60's and early 70's the 340 would usually take the 383 dart on the street and a lot of other big block cars of the day.
dream car for me would be a loaded 340 GTS rag top. even though in my opinion a rag top equals non-muscle...