fiberglass bumpers yes / no

My duster being a 73 has the bigger bumpers and I actually riveted mine straight to the valles. And then just used small pieces of flat aluminum and riveted those on the bottom corners and Center for braces to keep it stiff... been that way for years now Street driving and the drag strip... Doing it that way made the bumpers look tight in instead of sticky outie.. it's just a fun car I don't daily drive it...