This is like the basic rule : If you use a power adder, go on range colder plug (to start)and close up the gap. .035 to .040 is what I would do. The brand is your preference.
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302,vortech s trim @18-20lbs showing,edelbrock performer heads-o ringed,gt 40 upper&lower, mac 1 5/8"long tubes, sub frame connectors,50/50 rear, 70/30 front, manual rack,3:55 gears, c4 , best time 10.13@135mph
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