They mount using the existing valve cover bolts. You can slide them forward toward the radiator or back to the firewall. Clamps that hold the plug wires are adjustable too. I bent the mounting brackets to get them to set the way I like but it wasn't much.
I'll try to get a picture of the plug boot that touches the header. I thought it would melt and burst into flames but not much damage considering its in constant contact at the #5 plug area.