personally i would have went with fel pro, blue ones, common, they self seal, are cheap too, all would have had to do was RTV front and rear ends of intake and corners and have been done
i really dont know why anyone would use anything else
have installed so damn many fel pro intake and head gaskets i will never be able to count, fixed a freakign ton of old chevies up in no time and for good
impossible to count so many
good luck