Due to favorable response about my "452" heads I intend to use them. Should I use them as is or should I maintain the 10.1:1 ratio of the originals? What is the easy way to do it? Milling or thin gaskets? I now need rocker arms with rockers, and valve covers. Not available at salvage yards in my area. Anyone with extras? Minnesota Marshall Red G, 27 & 28 Dodge Brothers. [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/