How to do #5&7 plug wire

What Spectre wire holders are these? do they attach to the valve cover bolts? See Post 9 for pics

Those are Spectre #18483. They keep going up in price. We used to buy them for under $20. Now they list for $33.99. - But JEGS has them on sale now for $25.99.

http://www.jegs.com/i/Spectre/865/18483/10002/-1

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Normally they do attach to the valve cover bolts but can be adapted to bolt elsewhere.