I took this a few years ago...notice the size of the SRT Caliber compared to my Dart. The 73 Darts were listed as compact and the Calibers are sub-compact...has times changed.
So I must say the new Dart is slightly bigger than the 73
It was all in the trunk and the roomie easy to work in engine bay. Remember you used to be able to go to the hardware store and toss a sheet of plywood in the trunk and not worry about it falling out on the way home.