According to the 1961 Chrysler Service Manual Supplement, the PCV closed crankcase vent system was mandatory for all California cars. I have two 300Gs that were built for delivery within California. Both cars came originally equipped with the PCV system from the factory, according to Gil Cunningham's research on both cars. For those that have the '61 Supplement, look at page 126-127 and you will see a picture of the system. Bob J [Non-text portions of this message have been removed] To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/