Yea i know for a fact the stock kit plug will work just wondering if there is a ngk version that doesn't protrude into the chamber and yes its a Fred Head
I will be getting the head next week ill take the head to a store and try some plugs and see what works ill post the plug-s that works for future reference for people
Most of the Fred heads are the opposite - the plug does not protrude enough past the threads and is shrouded. The proper fix is to mill down the top of the plug boss, but most just run an extended plug.