I never knew these existed so i can not vouch one way or another. The cost to chrome these would put these in the price range of real ones. If your car is a modified you could always polish these for the shine. If you do get these, let us know how it worked out. 

I'd suggest that as a restoration piece it would be better to custoim fit these on the bumpers to account for production variance and overall differences created in bumpers over the past 60 years.