NGK ZFR5N plugs, yes or no?

I was running the champions and they fouled really quick. I tried to order the same NGK ZFR5N plugs from orieillys. They said they would have to order them. They said they had the NGK GH4 V POWERS, I was hoping for a hotter plug but he said it was the correct NGK for the 225. I gapped them around .040 and they made a difference. Just dont forget to cut off the washers.