Looks square and sharp to me, compared to a plug before running nitrous and looks the same. I'll definitely be keeping an eye on my plugs as I continue to use nitrous. Seems like the best way to ensure engine is ok. Thanks
I ain't trying to be a pain in the *** but the inquisitive Carpenter in me wants to know if that's Square from top to bottom or Square from the long side across the short side or does he mean everything involved?