I was planning on going straight to advance but when I go their they dont stock nor do they have the headgasket I needed(.40 bored) in their system. They have it available online and they ship to your door but its cheaper to just order from summit.
I ordered these
gaskets and im still waiting for them

I wanted the mls ones josh and justin were telling me about but their on the exspensive side.
As for header gaskets Im going to be reusing the ones i had on before my motor overheated. Their fel pro as well and work great, i believe their constructed of steel not some cheap paper ones.
Im hoping to be putting this together early next week as well.
Goodluck
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USAF Jet Propulsion Specialist

1985 383 Camaro-nothing special I promise

2000 NBM z28-also nothing special