Ken...according to the Nova Resource site...1970 was the last year for the fender louvers...
http://www.novaresource.org/rpo_ZJ5.htm
http://www.novaresource.org/rpo_Z26.htm
http://www.novaresource.org/rpo_ZJ2.htm
As for the air cleaners...there are conflicting stories...I believe the transition was in April/May of 1970. My February built 70 L78 had the original open air cleaner...I think John K.'s March 70 car has the open as well....might be interesting to run a little "survey" to gather info on this...or perhaps Greg Roberts has done that already [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]
***I have one of those Z28 style air cleaners..how can I tell if it is original or repop???
wilma..Birthday Boy [img]<<GRAEMLIN_URL>>/beers.gif[/img]