i like to use studs on any application where possible, and reduced head flange nuts.
i also cut the flange between the pipes, and drill one hole two or three sizes oversize. this allows the pipes to expand and contract as they see fit, ensuring the gasket does not tear then blow out between differences in cylinder temperatures.
i stole these ideas from member Mr. P-Body many, many years ago, and they have worked great for me since.
remflex gaskets have worked well for me.