I'm doing the brakes on my 89 5th Ave and used partsavatar.ca and got everything I needed for cheaper than I could locally. It also had free shipping which is pretty unheard of for a Canadian company.
Be careful though... they labelled the front calipers as left and right for the same part...
It's painted under the pad. The insulation is to keep it warm under the hood in winter...something needed in Canada I can tell you!
Replacements available:
Hood Insulation - DODGE - Page 1 - Class-Tech-Cars.com