is there a modern alternative to that gross looking OEM hood insulation that always starts to sag? i got a 68 javelin SST, and i don't want to just replace the hood liner with a new one. i've seen some guys with foil stuff up under their hoods, looks like dynamat or something, but i'm not sure of the temperature rating of that stuff, or what the temperature rating of hood insulation would have to be anyway. any suggestions?