I've never ever ran any sort of insulation unless it was on originally from the factory on a stock hood. You don't need to and a stick on one? That's asking to fall down on the motor while you are driving one day.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.