As long as the manifold being put on is not warped. Do not use a gasket. The factory did not use exhaust gaskets and had no problem with leaks. Every time I have used exhaust gaskets on my mopars they leak. I take them off and they no longer leak. Brian ----- Original Message ----- From: <JOEHOLSOM@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Saturday, July 20, 2002 6:03 AM Subject: Re: IML: Exhaust manifolds > I am getting ready to replace the cracked exhaust manifolds on my 65 > convert.My mechanic says that we have to have gaskets or the manifolds will > leak and I will have problems down the road. The field service service manual > does not show the use of any gaskets. I guess what I need to know is which > one to follow, the manual or the mechanic? Thanks, > Joe 64 coupe & 65 convert > >