The Pennsylvania TA-AAR hood company will soon stop making their fiberglass hoods... see/read their web-site (and prices are increasing).... I think February 2017 its over with them (retiring?)... someone should buy their molds.
Regarding the fiberglass air cleaners, I'm curious approximately how much lighter they are vs. the steel assemblies.... anyone know? I'm always looking to reduce the weight of the car, especially the front-end.