I checked the Mopar 1965 Master Parts Catalog and confirmed my hunch... The harmonic balancer used on all B and RB engines is exactly the same part number. 361, 383, 413, or 426W? Doesn't matter. For 1966 the part number changes but, again, the same balancer is used for the 361, 383 & 440. I suspect that the 1966 p/n supercedes the 1965 one but I have no way of checking that. Pete in PA ----------------- 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