My grille was bought new in 79' over the Mopar counter.

Supposedly, it the last one available from Chrysler Parts according to my Mom who picked it up while I was in the Service overseas.

It had little round donut steel clips to hold the cheesegraters onto the grille.

I recently found out that Roseville auto parts sells the square one's.

http://www.rosevillemoparts.com/product_...1d1c09f38fbb9ff

Were these square one's used as well?
What's the story on when the round one's were used vs. the square one's?

Was this a production time limit of either one and when each was used? Thanks.