Are dart sports mostly gone

^^^ I agree. Those braces on my 60s Fords are always in the way!! Plus they are like 2 1/2 inches wide.
Yes, those 71 up B bodies were nice road cars, a little heavier than the previous ones, and the rubber insulated rear shock plates to come we not for handling, just ride quality.
The the F bodies came along and paint went top chit!