I have a 59 Imperial and we took the engine out to do a complete rebuild. When we looked at the block numbers it reads 1851029-6. All of the information I can find out about block nubers is there is a 1852029. Is this a casting error or not a 413? If anyone can help, please let me know. The heads on it is correct for a 59, being only 4 bolt valve covers. Its just the block in question. Thanks Jerry Brown ----------------- 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