On my way to the parts store today. I'm replacing my 99 one piece header with an 04 grand Cherokee two piece manifold design. I need gaskets between the downpipe and manifold collectors. Is this a donuts gasket or just one of those oblong flat gaskets that gets sandwiched between the flanges. Furthermore for the actual manifold gasket, do I need a metal gasket or will the graphite style work? I've read that there are two styles made but I can't find the actual metal type anywhere. I ordered this one on rock auto thinking it was metal but its in fact graphite. If anyone with the two piece design can help me, I'd really appreciate it. Thank you!