feather duster hood and fenders

I have the hood, trunk lid, and bumpers with the aluminum inside supports off of a Dart Lite that i got years ago.
They are noticeably lighter than regular production stuff, the bumpers are still realatively heavy though.
I should weigh them for comparison.
I do know the hood and the trunk lid are steel outer and aluminum inner structures.
The aluminum parts are crimped to the outer steel skin.
I will weigh them and post some pics in the spring when i can get to them.
There's 2 feet of snow on them now!