.24 or lower on the gapSince I am a relative noob to some aspects of head specs, I will have 2 or three sets of plugs of various flavors on hand at the Nats so the pro that may be coaching me can recommend what he thinks. I have most of the plugs that were recommended ^^^ so I should be well covered. I am still running Champion irons so the half inch reach was the most important aspect of ordering all of them. Since I’ll likely run very high boost, I’ll start out with Mr. Spools suggested mr43T plugs being delivered today. I’m running stock coils but also have a Caspers volt booster to install so now I need gapping suggestions. Did a health check on the alternator yesterday and it is putting out a solid 14.1 at idle. My guess is .23 to .26 running 40# max. But standing by for opinions.