[FWB]

i just was in the intake gasket nightmare with my FE, i ended up making my own gaskets with the thick white Mr. Gasket material. i used another set of gaskets as a template and got a cheapo punch set from china freight. a couple of leather working razor blades and making them fit my ports exactly.
as far as sealer i found the best sealer hands down is the motorcraft sealer for the 7.3 diesel engines from ford, it is fantastic. used on the gaskets and the front and back beads. it comes in a short caulking tube.
now all this is assuming the head and intake surfaces are true to each other.
fit the intake on the heads without a gasket and use a feeler to check for any gaps. the thick gasket will allow for a couple thousandths but not much more.