About silikonet gaskets

Hello!

To start with, i live in sweden where we dont have the same produkts in the shelf as you guys.

I have a 69 plymouth valiant With a 318 magnum, been hassling with megasquirt but finally gave up and order a speed master intake and edelbrock 1405,

Today I buy liquid gasket for the intake, thinking about using it together with cork gaskets in front and back.
I could only find permatex ultra grey (super grey) would that be sufficient?
My other alternative is Chinese liquid gasket under Swedish brand……

Best regards Will from Sweden.