Hi John: That IS a a typical 300D engine number. As in previous years, it is the "3" that designates it a 300 engine. For some reason in 1958 the engine numbers are stamped on the block in the 58 N3 XXXX manner, even though they are written on the build cards (microfilm record) as 58 3N XXXX or more commonly, 3N58 XXXX in the style of 1957. Finally, toward the end of the M.Y. run, they just quit writing the engine number down. Guess the guy who did the writing must have been layed off. Anyway, the last four numbers are the important ones (aside from the "3"), and as most of you know, do not match the VIN last four, except just by pure chance. Hope this is a little bit clearer than mud. 300ly, Gil Cunningham In a message dated 2/28/2006 3:30:21 PM Eastern Standard Time, John@xxxxxxxxxxxxxxxxxxxx writes: Hi club, I am trying to finish my research on this car. This is what I was told the stamping on the motor is: 58 N3 1337 Is that consistent with the '58 model year for letter series automobiles? [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/