Rich and All: The AMA specs state that both the NewYorker and C300 have the same diameter exhaust system: 2" exhaust and 1.8" tailpipe. I can find no other info that disputes that. The parts book states the C68-300 takes two PN 1670 072 mufflers. I do not know what the difference is between these and the NewYorker units, but am sure both cars just have two mufflers total. I believe the four muffler arrangement shown in the parts book is for convertibles to clear the "X" frame. Comments? 300ly, Gil Cunningham A beautiful morning in Tallahassee [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 For archives go to http://www.forwardlook.net/300-archive/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> 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/