The plugs that are installed are NGK TR5s. I decided to go with E3 plugs and see how that works. So I bought 8 from Amazon. Part numbers are good and I did get 8. But one of the plugs has a poorly welded ground terminal. It was so bad that two of the three attachment points have spatter and welding material sticking out of the metal.
So I went down to Advanced Auto and bought a few just in case more have material defects.
I was only able to replace plugs 1 thru 4 today.
