Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
stick with the delcos.
Delco's by far.
unless you are modifying your ignition stick with delcos. you can use autolite equivalents. testing and calibration of of electrical parts were based on delco or delphi parts mostly. ngk were originally for import market and as such are typically designed for such just. because a maker has a crossover part does not mean it's better. when you want to modify your ignition system among other things a different plug may be in order.