How Rare? 1976 Dart Lite
Just a few corrections.....There was a "Spirit of '76" option with special decals to commemorate the 200th anniversary of the USA. Yours may not have that, but check the option plate. The aluminum bumper reinforcements inside the bumper were bolted together. The hood had the aluminum bracing crimped to the steel hood. The hood requires lower tension hood springs. Standard springs for a steel hood will make it hard to close and may kink it. The trunk underside appears to have been glued somehow. Some may have come through with all=steel trunk lids (shortage?) because I went to buy a hood/trunk combo that the owner swore it came off the same car and the paint matched. The color combo sounds very unusual and may be rare on those cars.
http://www.hemmings.com/hmn/stories/2012/04/01/hmn_feature12.html
http://www.foundationpc.com/press/press76a.html