A few oddball questions about the Duster

How/where did Plymouth come up with the name and what is it supposed to mimic?

Did the 340 model ever come from the factory w/hood sccop/s?

How much weight savings come from using glass bumpers and alum brackets over the steel?

How much weight savings come from using a non hinged glass hood over the steel hood & hinges?
In 1973 340 dusters, you could get a TWISTER it came with two small scoops. The same scoops that came on the 69 CUDA s. The hood was all black but the center.