weston magnum plug
Tomorrow I will try a Nova Rossi N7 and a Rossi R8, just to see how they do. They are very cold plugs... A friend of mine used the Rossi R8 in his .40 OPS Pylon engine...
I agree with not using long reach plugs. My Enya #6 is a little recessed and I think this is what keeps it in one piece...