I'm also interested in knowing what sort of material is used, since my inner insulation is also ripped. I would guess that no insulation would make a really warm and stuffy car. But the key question is, is it asbestos-free?
Never thought about that ppalma,as the manifold and exhaust are the other side of the engine i don't think heat would be much of a problem just the noise.I was thinking of covering it with sound deadening pads to keep the noise down and what heat came into the cabin would be a bonus for us Brits at the moment lol
The insulation is still available new - it is basically a standard sheet available off the roll. The face is heat reflective aluminium with a mineral wool insulation mat behind it.
Do some hunting around and you'll find a shield that looks original - most have a different pattern on the face but there is quite a range to choose from...