distributor

I also like & use NGKs. Use a '5' heat range for street/strip, NA.

The 8.5mm plug wire is more than adequate. Rarely is the rated voltage of the coil ever used or reqd. GM HEI coil was originally 50,000v rated. One test I saw with 0.060" plug gaps reqd 28,000v to fire the gap. The rest is in 'reserve'.