I have a 413 that had 440 (1968) heads on it, now I am going back to the 413 heads. The rocker arms ARE different. But, what about the lifters and the push rods. And when I say different I mean the length. Thanks, Charles _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web! ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm