[My427stang]

What is the issue?

Do the ports line up but the gaskets are not holding? or is it a port alignment issue?

If its just a sealing issue, my advice is to lube the bolts with antiseize with a fresh gasket, then tighten them all evenly like you would a head or intake, until they are good and tight

Then get the motor hot, and immediately retighten all of them while hot. You'll swear and get burned, but its been the best way for me. I basically use whatever gasket I have and "knock on wood" have never had a gasket sealing problem due to the gasket material

Finally, can you post your head casting number if its a port location issue? I am surely not saying you dont know what you have, but I have seen guys use C8AE-H heads with a different exhaust port and call them med risers due to the high intake port location (like a med riser, just a little smaller)