While messing around with my pedal hanger I've found that my mach has two different types of insulation. There is the thick stuff on the lower firewall that has a rubbery facing (molded). This is the stuff that is available in reproduction. Above the firewall at the cowl is a different section that has a lighter insulation with a black thin plastic facing. This lighter insulation is falling apart big time and making a huge mess on my floorboards. For those that have had their 69/70 car apart, did you find two separate insulation types?? I don't recall finding the cowl insulation on my 70 fastback and wonder if it had already been removed. My car has A/C and is Metuchen built. Just curious.