dont forget #5 and #5, 2 of them. I didnt replace mine and got lucky...or is that the cause of my CEL codes after replacing the intake gaskets?
Also it has been known that the vally pan gasket can leak air causing faults... which looks like it is unobtanium for your engine. Maybe thats my CEL code.
Hopeis good to you this year and gives you a bunch of beer and samwiches.
Good luck in all!