What Spark Plugs For 340 With EFI and Hyperspark

[1970GranCoupeCo]

I am installing a Holley Sniper EFI with the Hyperspark ignition system in a cast iron head 340 (202 intake and 160 exhaust) and I am wondering what spark plugs you all recommend for this application.

There are so many choices from precious metals, fine tip, col, hot, etc,

I do not remember what spark plugs are in the engine now but I am sure 20 years ago when I installed them they were most likely some kind of Champion plugs.

THANKS for the advice