Best way to seal intake and what gasket?

It really depends on which gasket and which intake , all the aftermarket intake makers have recommended gaskets and install proceedures , all the gasket makers have recommended install proceedures as well , after running the blue perma torque gaskets with my RPM AirGap for 7 months I read in the Edelbrock tech bulletin not to even use that gasket with their manifolds , they recommend the FelPro 1213 over even their own gasket . Go to the makers website and search their tech info , stock cast intakes can pretty much use any gastket but every bulletin I have read has said throw away the cork end gaskets and make your own with a 1/4 inch thick bead of sealant , some like the RTV but I have been using the "Right Stuff" which is not a silicone based product and is the product used on the assembly line by the big three .