Remflex and never look back. They are awesome, you can drop the exhaust and re use them many times. They also make, IMO, the best header or manifold to head gasket.
They are available on amazon or the online auto parts supplier of your choice.
Although copper gaskets are nice and do work well (if you have flat surfaces) I have to agree with this post and the others like it.
Remflex just can't be beat in my opinion.
