How to do #5&7 plug wire

I always buy the Spectre wire holders to keep my spark plug wires exactly where I want them. On wires 5 & 7 on my small block I run the wires closest to the motor on the loom. I had some MSD plug wires at one time that had the very ling straight boots on them and couldn't keep them far enough from the headers. I'm running 45" 8mm Taylor wires now.

View attachment 1714776638

View attachment 1714776639

View attachment 1714776640

View attachment 1714776641

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