Try and get the surfaces as flat as possible and then use "HiTemp" RTV. Would be the Copper stuff . It's MADE for exhaust parts. I've been using it for YEARS on headers and the like. Works best if you let it "cure" overnight before exposing it to heat. Lot's of guys don't believe it will work but won't even TRY it. But HEY,,, that's just ME!! Bruce Hevner _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com