Weight difference between glass and steel bumpers on 71 duster/scamp

mshred said
im looking for some concrete numbers if anyone has some...Although 30lbs sounds real good...what is the difference between race weight and street weight glass for bumpers?

Big block dart.com go to tech section. weights are there.

Even with steel bumpers you can shave weight out of those bulky heavy brackets. 15 minutes with a plasma cutter and a hole saw.