The expansion valve is mounted out side the FB box on 58 901, verses inside on a 57 900. -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx]On Behalf Of John Sent: Thursday, June 10, 2010 10:41 AM To: Chrysler 300 Club Intl Subject: [Chrysler300] A/C units -1957, 1958 Got a question here about Chrysler A/C units - As far as the underhood fiberglass evaporator/heater core enclosure for the 1957/1958 air conditioning units, what is the difference between a Model 901 and Model 902 unit? Is it just some sort of upgrade, or does it have to do with single A/C versus dual A/C? Thanks. John Spiers [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@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: Chrysler300-digest@xxxxxxxxxxxxxxx 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/