QUICK ANSWER needed...MSD plug wire boot sitting on header..

My question is, can I use the metal heat shields that were on the original plug wires to protect the boot from the header if it's sitting RIGHT ON TOP of it? Or will it overheat?
Thanks...need a quick answer if possible.
got 8k miles in 8 months, and no probs yet
the only problem i have is the cheap wires keep cracking near the coils' boot, from taking them off so much


