Hi, John: The jack in your C-300 is significantly different from mine. Perhaps others can help us define what a proper C-300 jack looks like and how it might be identified. Mine: Base: Rectangular-6 1/8" x 8 1/8" slightly dished-stamped cup welded to base with trapezoidal hole for vertical jacking bar. Stamped U69 above small rectangular hole in toe of base. Jacking Bar: 35" long, slightly trapezoidal-fits nicely in its place above RR fender well. Mechanism: Stamped UN and UP with an "UP" arrow between the U and the P. Hook: Removable from mechanism, stamped with a crude Pentastar, 2931101 and 93153 All this suggests it is a newer jack. The previous owner/restorer refinished the jack base and mechanism nicely in battleship gray and our judges think it should be black. I could use a decent and proper retention spring as my shiny ACE hardware replacement works, but is not correct. Interesting that there are jacking instruction trunk stickers for '55 De Sotos, but not Chryslers. C-300'ly Rich Barber Brentwood, CA 1955 Chrysler C-300 1986 Chrysler Le Baron T&C Convertible -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of jpeabo@xxxxxxxxxxx Sent: Monday, July 02, 2007 8:37 AM To: 300 club listserver all club members Cc: jpeabo@xxxxxxxxxxx Subject: [Chrysler300] 55 bumper jack I'm trying to identifie the bumper jack in my c-300. The base is eight ins. square with the corners bent over. The hole in the base is triangular but not 'T' shape. The jacking bar is 30 1/2" long and sorta 'V' shaped. There are distorted round push marks holding the jacking mechanism from falling off either end. On the jack it says "up" "down" and "uni" and nothing else. There are no other marks. Thanks for the help, John and Nancy Peabody, Pittsburgh Pa. [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 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/