Yes Dave
i used it inside the engine bay, not masses of it just along the chassis rail and inner wing below the servo and around the tranny tunnel also came in useful in places that the exhaust came close to the body above the rear exhaust boxes and sides of the wheel well as them rear boxes get very hot, my first attempt at at shielding the heat was to fabricate a custom heat shield affair attaching to the head and manifold itself but very difficult to do and had resonating issues, the zircoflex works really well even at full chat around Spa circuit