Edelbrock 6077 Spark Plug Question

Hello Guys,

I'm porting my new Edelbrock 6077 heads. I'm working the combustion chamber to keep all equally and improve more flow...

I have a question about the spark plugs, I'm using this spark plug NGK R5672 A-8 (same that Brian Hafliger used in his article "How To Build A Pump-Gas 620hp Small-Block Mopar")

I think that the spark plug is "hide" inside the chamber like show the imagem below:

What do you think guys? Any suggestions?