I've got to digress on the Standard coils (maybe it's because it was a 'T-Series') even though it was made in Poland (which i thought well that should be all right).
Well that coil only lasted about 500 miles, then it worked intermittently from a cold start and got worse at normal operating temperature. It seemed to run a hot spark out of the box and either was defective or was designed to run a hotter plug than OEM.