I seem to recall a few years back on the buickperformance.com e-group, Alan Faircloth out of GA looking heavily into repro'ing the '67 GS grille. I don't remember the specifics but I think the # of people wanting the setup couldn't absorb the manufacturing price to a reasonable amount. It's been a few years and the ol' nugget has been smacked around a few times since then - so my "who's what's and when's" are probably way off...