Carl..now about those spark plugs you can buy the ones with the cut back strap from the factory..its what i run in my 511 bbc.....it will say right on the box.."CUT BACK GROUND ELECTRODE".....
you might have to order them..the autolight race plug will not be on the counter anywhere in your local normal parts house.
Brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "