The sleeved covers work, but it's nothing that the average person can do at home. The cover must be sent to someone with the machine facilities to do it. The sleeves are stainless steel. I don't know about the expansion coefficient, but a lot were done that way when new covers weren't available. Cost would be about the same as a new cover. Get a cover from www.bulltear.com. You can find them a little cheaper, but Bulltear has a jig to check them for proper distributor/oil pump alignment. If that is off (and it sometimes is!) you'll have pr Frank Swygert Publisher, "American Motors Cars" Magazine (AMC) For all AMC enthusiasts http://farna.home.att.net/AMC.html (free download available!) _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com