spark plug suggestions

Just about to wrap up my 466 build and was wondering what spark plugs to use. Blue thunder heads with stock port/location. 11.5:1 compression, mostlye street driven, and no ignition box as of yet. just running the pertronix ignitor II and coil for now. Looking for autolite or motocraft plugs and need to know if I need tapered seat plugs or the ones with the gaskets on them, and what part numbers. Any suggestions? Thanks

bump for an engine guru .......

well upon further inspection today, I can see it does not have the tapered seats so I believe it needs plugs with the gaskets. No idea where to start on part numbers though

after some google searches, found my answer. Autolite AR3933